A GTI Arcadia with two halves of a Ganymede attached to the sides, with BFGreens attached to the Ganymede and tons of fighter beams to protect the meat of the installation, which are four Orions docked permanently into it for extremely heavy propulsion forwards AND backwards, a Setekh wedged into the O-ring in the Arcadia for extra special sensors, and every goddamn fighter and bomber possible stored in the hangars. To provide additional hardpoints where none were available, as many GTSG Mjolnir turrets as we could get our hands on have been hard-fitted into the exterior of the station. The number currently exceeds 120 Mjolnirs.
Finally, the station funnels a huge amount of its power into an ETAK device contained in the GTA Setekh wedged into the little ring in the middle of the Arcadia. This delivers transmission bandwidth on par with the Shivan Comm Node, but is designed for a more...offensive purpose. When active, this ETAK doesn't bother to communicate, it just transmits such ludicrous levels of utter crap into the Shivans' heads throughout the region that it overloads any small Shivan ships within a one light year radius, sending them into a catatonic stupor. Small Shivan ships within 100 meters of the device will self-destruct. Larger ships are affected only by their proximity. At close range, the device can even completely disable a Lucifer class or shut down the main cannons of a Sathanas class for a unknown period of time, long enough to give the winning edge.
In short, the device does permanent and irreversable damage to the electrical systems of Shivan vessels as the stream of incredible power into their communications overloads their ships. (Think The Probe from Star Trek IV and its communications' effect on human vessels. This is the same thing, only its a Super ETAK and it only affects Shivans.) The only disadvantage is that the device itself requires most of the station's power to operate and even some backup from the attached Orions and Ganymede ring. Therefore, when it is active, it is up to the escorts not attached to the "Arcadianought" to do the job.
At low levels, the device easily disables Shivan fighters for easy capture, so that they may be captured, refitted, and turned into Terran versions for the "Arcadianaught's" hangars on the four Orions and the Arcadia itself. The technique has proven so effective that over 1,000 Terran-modified (and ETAK-shielded) SF Mara and SF Dragon class fighters now reside in the secondary hangar of the Arcadia installation. Only a few Shivan bombers have been captured as of yet, as it seems that the Super ETAK weapon also causes the weapon synthesis modules on the Shivan bombers to go haywire, producing a warhead which detonates immediately, destroying the bomber.
Who needs a Colossus when you can use a modular setup that uses the corpses of your enemy to bolster itself?
The highlight of the installation's work culminated in the successful capture of two Ravana-class destroyers and five Rakshasa-class cruisers, providing the station with Shivan armaments (BFRed, SAAA, and SRed) for the Ganymede defense ring. However, it is widely known that the only reason the Mobile Arcadianought Battlestation works is the ETAK device contained within it. Without this device, the station would be defenseless against the Shivans. Although the Shivans seem to be adapting, we are still able to capture enough of their vessels to increase the ETAK device's output even further by wiring actual Shivan communications systems to the device. With every defense they create, the Mobile Arcadianought Battlestation can kick the crap out of it. Research is being conducted aboard every day to create a super-shield system to protect the installation as it grows in complexity.
My ship of choice? HEH HEH...
Alpha 1 would be flying a Terran version of the Rakshasa, armed with two BFReds on the front and the rest nothing but MISSSSSSILllleSSSS (with a sprinkle of AAA of course.)