About the siphs HP - have you ever toguh of hte reason WHY ships have specific HPs'..
Ok, what if hte Deimos has 80000 (or was it 70000) HP becouse it's heavily armored.. and normally, a ship with lighter armor of that size would have...let's say 50000 hp?
And that the destroyers have so little HP compared to a corvete becosue they aren't heavily armored?
Makes sense, doesn't it? 
Now, the prospect of a 250 000 HP BB looks more real, doesn't it?
Let me summarise what you've specified.
2.5 x the hitpoints of a Orion
8 main turrets, positioned on the top and below, 4 beam cannons on the sides, and another undefined anti-cap weapon below....and the rest is pretty much point-defense weaponry. Extreemly strong subsystems and main weapons. Ability to concetrate at least 60% of it's anti-cap firepower at any point in space.
2 small fighterbays with a squad of interceptors each.
As many turrets as the colossus, including what would appear to be more powerful beam weapons ('extremely strong main weapons' - which can destroy a destroyer within a few seconds). Magic heat sinks able to take more heat than the Colossus main guns could vs the Sath, and yet which do not have any negative impact on the internal structure or environment of the ship. These heat sinks and also extra reactors are apparently all located 'where the fighterbay would be', which means you have a minor, teensy little problem of shifting heat hot enough to melt a starships' hull all the way down there.
20 fighters on a horizontally spanning dual-fighterbay. 2.5 times the armour with absolutely no consequences on the space requirements (we assume some form of magic ultra-dense armour, or even more magical placement of selective plating that somehow,
no other designer has ever considered. Invented plasma turrets.
Additional reactors to power said weapons, somehow fitting in the assumed space savings for removing fighters, yet accounting for neither the need to shield/protect those reactors internally, introduce a new power grid, house the many crew for the new turrets (as evidenced by all vis-a-vis comparions of both modern naval vessels and stated freespace 2 crew figures), or handle the logistical issues of having those reactors (as seen with escorting supplies to the Colossus).
An ability to somehow only attack when a destroyer does not have any defensive forces around, at a pin-point distance, and yet somehow also manage to avoid any form of attack from roving patrols by jumping out. Capable of jumping in, destroying a capship, and jumping out before fighters can reach it. Immune from detection by enemy ambush forces, yet is able to track bombers back to their capships at will (who are remarkably willing to lead the enemy to them), if not track the capship itself (shame they never thought of that in attacking the Iceni/Repulse/every other FS enemy ship, eh?). Oh, and never, ever attacked in open space by forces taking advantage of its weaknesses in terms of lack of bomber defense (well, when it does it can just skip away merrily into subspace, as we see in every battle in FS2 when the outnumbered and damaged ship just jumps to safet....oh, wait).
Every major functional system housed deep within the core of the ship, yet absolutely no consequences to the destruction of the outer hull with reference to subsystems wiring up, for example, turrets. Able to sit and be pounded for ages at a blockade, by enemies who have positioned themselves
just right in order to be hit by the BS' main guns (and in contradication to every blockade seen in FS2.... you'd think they wanted the battleship to win or something....waittamo!), and with a crew who really don't mind atall being sent in as a beam-sponge and have no objections to sleeping in the hallways or going without food when their quarters and mess hall is destroyed.
Absolutely no speed penalty whatsoever from all these added turrets and armour. Indeed, it actually goes faster!
Saving a large amount of space, of course, because the GTVA stores it's off-duty fighters in the
most wasteful layout possible when they are not being prepped for deployment.
Using an amalgamation of technology from all the best ships; like Deimos reactor, Iceni armour, Orion/colossus weaponry, which no other ship uses or would be allowed to use (as a hypotetical competitor) because...er.......er.....help?
5 individual, autonomous engines (because you'd need 5 subsystems to justify that sort of scheme; hence autonomous), which have no impact on reactor or space requirements despite effectively duplicating the engines 'engineering subsytem' 5 times over.
Able to destroy a Ravana in 30-40 seconds without even coming under attack from the fighters/bombers of said ship, something which the best part of a GTVA battlegroup failed to achieve.
Several times cheaper than a destroyer of the same technological era, despite all that super-strong-but-light armour and loads of extra reactors. No reason why - apparently beam cannons come for free in cereal packets nowadays.
Able to increase range of weapons with absolutely no consequences. Just like when the Colossus overloaded it's beams and power grid trying to fire for too long.... ah.
And, on top of this, one of the primary justifications is the WW2 battleship, which has been rendered obsolete by all modern navies in favour of...shock, horror!....aicraft carriers and whose sole purpose in warfare is shore bombardment. Oh, and ignoring all those naval analogies about stuff like crew numbers for carriers, etc, where they contradict the magic battleship-o-doom.
Oh, and any contradictory Volition stated facts from the game are mere 'titbits', unless you can twist them to infer support for your little uber-ship, in which case they become the holy word of the god of ship design - as we see in the quoted bit at the top.
What else... oh, Volitions ship designs are all illogical and you could do it better. That was the 2nd last post, wasn't it?
Errr excuse me but why is putting a BB to go head to head with a Ravana an unfair fight??? I ahve yet to see the logic of this arguement.
i dunno. Perhaps it being twice the size and armament might have something to do with it.
And how the hell does a DD launch all of its fighter/bommber/interceptors complimnet in uder 1 minute?? I have yet to see it launch enithing more the a wing or 2 in this time. Sure you will say that the DD has fighter escort which is permanantely out there but then again that fighter cover consists of nothing more then one or 2 wigs of fighters or interceptors. To simply asume that a DD can swarm a BB the instant it exits subspace, with its fighters, is a lot of rubbish. That would mean that the DD would not only know wich class of warship is coming at it but from where and at what time. Hey this isnt a plane schedjuale that you can just chech and say..hey a BB would come to kick by but all over this sistem at 12:00:30 sec on the x day! Come on! These arguemnt are totaly subjective!
I expected much more from some of the people over here!
What? Pat.rol.Wi.ngs. Broken up for easy digestion.
The fact is that since the big C failed in the end at its role (to be the uber ship that delivers the GTVA from the shivans) everyone keeps comapring every new big shi ideea to that one. Things are not that simple!
You can argue all you want that it would be an unfair fight to put a BB against a Ravana but then again so could I argue that the shivan beams are unfair and that actualy the GTVA had it not been for the shivan beams could of won the war! And hell i would go so far as to say that it SHOULD of won the war since it was an unfair fight from the begining!
what the hell are you on about? The BB is bigger. Do you think putting a Colossus against the Ravana is any fairer andarguement of the relative merits of the destroyer and juggernaut?
Come on you guis I rememberd a comunity with a lot more imagination and a lot more opened to new ideas! What happened. Sure maibe just maibe this design is flawed but then again I don see anyone sugestin anithing else!
We're still busy pointing out how stupid this one is. Anyway, I did suggest something else. just double the Colossus' size and build a new one. After all, it's not like anyone is 'sugestin anithing else'.
Oh and TM while i do agree with you on some of the arguements you have for a BB some of them are completely out there..if you get mi point! You can not invent over night everithing this ship needs.
Oh and to reply to a post wich said that I wouldnt be able to get much tech from existing designs I propose an exercise:
-The engines would have to be of new design I admit
-the armour tech would be taken from the Deimos which as far as I remember is the latest in terms of armour tech and protection
-the beams..welll........need I say more?
-the same goes for AAAF protection
-the fighters could be taken from everywhere depending on which tipe you want or you could design a new tipe just for the BB which would be more versatyle or you could just pack this thing with 24+ TerranMaras an be done with it!
-engine subsitems reactors and stuff like that could be modified or designed using the big C's sistems as a template!
- shipyards that could actualy build this thing..well we do have the C shipyards dont we??? also who says that you can not build a ship like this in a destroyers shipyards sure with some modifications but its far better then to buil new ones just for this thing.
So you see much of the tech already exists all you have to do is put it toghether!
I wasn't aware Scrapyard Challenge built spacefaring destroyers.........
Give me a sec and I'll build a super-fighter with the nose of an F-15, the wings of a B-52, the cockpit of a Spitfire and the engines of an SR-71.
And don't get me started on the stupidity of '24 Terran maras'. What, are we carjacking Shivans now?