The option to take up to 5 of your best men to start a new city is soooo awesome. But with that the "Impossible" is too easy you can finish it every time, so maybe another level should be introduced? Maybe a bigger city, and harder objectives, longer time it takes to finish, more tiles needed for City Hall, Hordes attacking crucial buildings directly.
The "Impossible" without transfered people is fine thou. But anything below "seriously hard" is too easy imo. And the increase from "seriously hard" to "impossible" is quite big.
The endings are awesome but what happened to the satanic graveyard?? And the Gang victory does not seem to fit the climate, stopping their activity is rewarding enough, but how does it solve the zombie problem?
The disaster event: I hate it so much, it's so much fun.
Loved Rebuild and I love Rebuild 2 even more, hope that next is coming and that it will be even better.