It's been a while since anyone posted here. I've been running this mod solo for a few days now. It's fine, but it misses some of the flavor expected of a Star Trek treatment. My biggest issue is that the mod does not feature playable civ heroes like in FFH2. I would have hoped for heroes I could use to interact with other civs (perhaps a new development of the spy unit?) to have some effect with diplomacy or to perform commando-style actions. Otherwise, it would be nice to also be able to attach such hero figures to a ship, like the general but with special abilities conferred to the ship unique to each hero (etc.). Events are a bit underwhelming. Sending hero figures on quests might also be another idea.
Oddly, I noticed heavy cruisers have no ranged weapon, but recon ships do? That's weird. Heavies carry no photon torpedoes, but light cruisers do? In Final Frontier, upgrading cruisers increases the number of missiles they can carry. Why not here? I thought the ability to capture or resist capture was a good idea. I ran into an issue with ranged weapons. I ended up using a mess of fast-moving recon units to wipe out whole fleets with ranged attacks, and still move away. There don't seem to be good defenses against that. The more expensive warships (advanced cruisers and heavies ought to have various abilities to resist ranged weapon damage built into their stats). Some planetary defenses combined with nearby starbases ought to provide some extra protection against massive ranged attacks. Another game breaker I think is the subspace torpedo. They ought to be harder to build.
I played this game with the Marathon setting -- going up the tech tree is way too fast. Either add more techs or make them harder to earn. The values would benefit from a bit more refining as well. Some (non-critical) techs might also be limited exclusively to specific values or civs. They may become available much later to other civs by way of some parallel tech development. Anyway, these are just ideas. Thanks for developing the mod.
One more thing -- the diplomatic resolution for all members to agree/refuse a mutual defense pact causes the game to crash.