100% on board with this; we DESPERATELY need an Alien Expansion world/pack! I'm currently in the middle of having an entire generation of aliens...and it's so frustrating to have to cheat the game to buy the portal or satellite instead of just having the chance to meet on the street. I mean, yeah, I can just keep creating households of aliens and not moving them in...but I can be so picky in CAS getting everything 'perfect'--I miss that spontaneity!
Maybe there should be a whole sci-fi expansion pack? I mean, yeah, it'll work out costly but at least then players have the option to just not buy if they're not interested? Then everyone's happy; more realistic players get to keep the realism while zanier players, well...get zany!