Erm... why are you saving the Seth, while discarding the Tauret?
SpeedSeth: 55m/s, 120 A/B's
Tauret: 65m/s, 130 A/B's
GunsSeth: 4 (2,2)
Tauret: 6 (2,4)
MissilesSeth: (40,80)
Tauret: (100,100)
The only things that the Seth has going for it (IMO), are a large amount of countermeasures, and a tiny cross section.
Also, i have criticisms of other classes being kept as well:
GVF Thoth: Old. Between this and the Serapis I prefer the latter, which is not only newer, but more maneuverable and faster.
GVB Osiris: This is just plain old. All it has going for it is its 2 turrets, since its missile bays are tiny for a bomber...
GTC Leviathan: I can see why you wrote the Aeolus out of the MOD, there having been only 2 dozen of them to begin with. And the Fenris was cannon fodder. But the Leviathan is horribly slow. Perhaps an engine/reactor upgrade is in order.

GVC Aten: Unless you added turrets to this, there is little reason to keep this instead of the Mentu.
GTB ArtyDH: I thought the DH version was just a test platform for a new reactor, except with 1 less tail fin, and a niftier paint job. So by the time of Inferno, all Artemises would have that reactor but still have the old white paint job. Or are you repainting the DH model?

Why did you drop...
GVF Serapis? Aside from its paper thin hull, its not that bad.
GVF Tauret? It can use the Kayser. The only bad thing I found was the lack of Maxim usage.
GVF Horus? The Vasudans won't have any interceptor class without it, unless you use my idea for the Naunet... email me if your interested...

GVC Mentu? It can take about 4 times the damage of the Aten, and has 10 more turets. Great antifighter/antibomber ship, whereas the Aten is pathetic, so...