Would you want out of a Sixam / Alien dlc?

It's been a while since I last played Saxim. The first time through I built a home lot, only to discover that it totally messed up the party that was going on there. It is something that happens once your sim reaches a certain employment level in the Science career. I would love to see a small community built around it, meaning a couple of community areas, and a couple of rental-type lots, that could be converted over to lots you could purchase and live in, in the case of those playing alien sims. I would love for it to be locked, meaning you won't be seeing any nonalien sims walking around, just aliens. No phone calls from the earth, and no notification of anything that would be going on earth, such as the Romance Festival. Although communication through the computer would allow for some type of long-distance communication would be nice.