House building is much better and one of my favorite part of the game. I am waiting to see more about ai, behavior, careers, and other stuff your sims can do, before I decide it I jump in during it's first sale or day 1. I hope they have a optional online mode were you can open a neighborhood to other or choose invite only would be crazy fun to see a gaf city. They really need to tidy up performance at times, I guess it is worse with more expansions, it can have some nasty slowdown.