PLNT-class Seedship by Willis Reifsnyder. This
looks like it's about the length of an IO Cruiser.
FTW by ska2d2. You'd have to find a way to cut six studs
in length out of it, but this would look great on a game table.
Micro Sulaco by Grantmasters. This
fits in right under the Frigate limit.
Bf-1 VTOL by rope fish. Render. Not
a starship but, could pass as one.
Micro SSV Normandy by the Mugbearer. Shrink this down
a stud or two and it would make for a great looking Cruiser.