Okay, here's a more informative post regarding my opinions. Now first of all, let me display the Vasudan fighters for a benchmark to my later comments.
What's to be said about these designs? If I could state out any one commonality between all of these designs, I'd say that they are flat. Flat, flat, flat. They all have low vertical profiles, even the Serapis and the Tauret. Now the Sekhmet, Bakha and the Phat are all a bit higher but they're still pretty flat.
I also want to point out something else. Can anyone find the missile banks on half of those? The only place the missiles are prominent are on the Serapis and the Bakha. The Tauret and the Sekhmet have them too but they don't stand out as much. Now onto the new designs, first with the positives:
This is by the far the best looking Vasudan out of the entire lot. But it does look a little Shivan. And I don't think that the Sehkmet sets a precedence for Shivan designs as it came from the Hammer of Light. (it looks like the Basilisk btw)
This one is kind of interesting, but it looks more Shivan than Vasudan. From here on the ships start to move towards the a kind of "bunch of limbs connected together" look, which frankly I think is more Shivan than Vasudan. Even the advanced Vasudan designs in FS2 look like they're one piece. This ship actually reminds me of the aliens from the movie of the same name. Retexture it with Shivan images and it might be all right.
This ship is interesting, but not because it looks Vasudan. It reminds me of Prince Xizor's Virago from Star Wars (see Essential Guide to Vehicles/Vessels). And this is FS2, not star wars.
Both of these designs have several faults:
-prominent missile banks. They look like something out of Battletech: Technical Readout 3067, a book which I own but which contains several mechs I'm not too in love with.
-high vertical profile / no lateral profile. -looks more utilitarian than stylish. They're both main bodies with missile pods attached (utilitarian = Terran trait).
Basically they're both exactly the opposite of every Vasudan fighter/bomber we've ever seen.
I'm not sure if this is suppose to be Vasudan or Terran. But if you round the main body more, retexture it a bit, I can see it as a passable heavy assault fighter. But certainly not a trend setter.
Frankly I'm not sure what the hell this is? Is it a fighter? I guess by that white bit at the part that's the thruster. Again the whole vertical/lateral thing is backwards here. If you moved the thruster to between the main body and the first spiky bit, and then rotate it a bit, throw some guns on that stinger part it might look alright. Might look a bit like the SW Cloud City fighters but only in passing.