[Suicide Junkie]

I really don't see why there should be any link between two different games of SE.

If you want more stuff for your race, just choose a higher racial points setting.

If experience affects the race you can design, then players could cheat without modding the game. And you can't mod the game to cheat when you're playing against other people.

PS:
Where roleplaying should be is in the happiness types, cultures and whatnot.
Be your people Peaceful, bloodthirsty, or masochistic... Planet-hugging hippies or hard core industrialists.