Message 153 is spot on. There seems to be some sort of problem controlling fleets, maybe related to how big they are. Last game I played, on many occasions, I had to disband a large fleet in order to get it to attack anything I wanted to attack.
GenmaSaotome
Require some kinds of repairs to be done in "drydock". It just seems kind of silly to be adding some great new weapon to a capital ship while it's out in deep space instead of returning it to "port". The technology tree is presently both technology plus real-time implementation. Split that and put implementation at the repair docks and put a price on it. Increase the purchase price of new ships per technology advancement. Sort of a base price for the ship
Diplomacy features? Hmmm, I'd rather see a new package w/ significant improvement ot economic issues. But if diplomacy is what you want, consider these: Joint Defense Force: Teams participating in a Joint Defense Force contribute ships, perhap in some sort of value ratio. JDF can only be used for defense. Whether the JDF is player controlled, AI controlled, or both is up to you. I think AI would be better as you could make it more team-neutral in it's cho