It seems a bit easy

[Strategia_In_Ultima]

There is an option in the game settings at the game setup called "Team mode: All computer players versus all human players". If you play with the maximum amount of opponents, with AI bonuses set to the highest possible level, and choose a good mix of opponents - i.e. some that have good space combat bonuses, some that are better in research, so that the researchers can pass on high-level tech to the warriors - and use TDM, I think the game'll be a lot more interesting.

To be honest though, I've never used the Team mode.