I've seen a few Ship Data Cards for 24th century ships. It looked pretty much like a challenge just getting one ship to work. The Galaxy class was basically a Battleship/X-ship hybrid. I'd like to see Amarillo Design Bureau get the rights to the rest of the license, but I think some streamlining is in order if it were to be a playable game. Either that or they need to limit the number of huge ships. I assume that there are less than a dozen Galaxy class ships in service, and there would be more focus on the rest of the fleets.
The one thing I'd like to see would be the Breen ships. I don't know why, but they are the most interesting of all the DS9 species to me.