[Andrés]

Research is an important part of the game and of your strategies, full tech may be faster but you're losing a great part of the game.

I've never considered removing SE4 tech.
After all, this is still the beggining of a 'sci-fi crossover mod' and 'seiv universe' is one of the sci-fi universes that you can pick.

I'm thinking about some solution for your problem. Maybe a 2nd racial trait as requirement for shared techs. I'll try if it works and may add it to a future Version, but I do not consider this something important that needs to be fixed before trying a multiplayer game.