GTI Arcadia
GTI Ganymede
GTI Polaris
PVI Karnak
PVI Cairo
GVI Rameses
SI Arachnas
SI NirvanaBig tip: Stick to canon FS. A lot of us want a fun FS strategy mod but we don't want poorly done extrapolation.
No Shivan campaign or "Shivan voices" as the only thing in the games we hear is ETAK. For the campaign stick to events in FS2 we couldn't be at in the campaign which are mentioned in the game itself. (the Colossus hunting down NTF runners, etc.)
Shivans I'd have "spawn" from natural subspace nodes, maybe have gas miners collect material, jump through, and "purchase" units from it. Don't give them voice overs or even a campaign. Comm node construction from Shivan transports would increase the amount of people you can have, etc. (just an idea, preferably not working out a Shivan system and have them as random attacks I think is better.)
On the Arcadia, definately good for ship construction. On that, the whole transporter thing in the game could probably be switched to Elysium transports transfering crew. Cargo depots could be done for "buildings" such as the research labs, etc.
Simiarly, I'd probably give the Vasudans the Ganymede, it's afterall the universal GTVA spaceyard as stated in it's tech readout.
Just my two cents
