I'm hoping (more than likely in vain) that we can have the opportunity to do some of the wackier stuff seen in SimCity: Societies. By that, I mean I would love to craft an authoritarian police state, a beautiful pagoda-filled village or a Disney-esque paradise town.
SimCity: Societies was very bad in a lot of aspects (game froze all the time, roads were awful and it was massively unbalanced) but I'd be lying if I said I didn't miss it at all when it comes to city building. I just wanna make clown schools and have a bunch of free-roaming clowns, damnit.