1. Ok, there are people who really think there's nothing to do after reaching lvl 50. Fine. So there won't be anything to do after reaching 75 or 100 either. Think about that.
2. I also would like to see more districts, but that's more because of the new looks and stuff. But yea, if they add new areas, it could be combined with an increased level cap very well (like the new district being 50-70).