This game is silly and stupid as it seems to be always urging the player who is so pose to be creative to always upgrade, we are not little children though it seems that there target audience is for the autistic and regarded!
so far most city's I've seen are uninteresting and basically the same....game play is a real bore....this is the only game I've ever encountered that would eventually time out the player session as well and the only way to actually proceed is to actually take a break and come back some hours and maybe even a day, it trolls on time and is the worst game ever, I should have never started playing this!
i cannot say I was having fun, this is not fun, the waiting game is so silly a game design it should have failed horribly as a game design engine, the only thing that keeps us going is the artistic fact that we actually want to make a pretty city and every house is actually a trophy only it may be ruined by that silly yellow helmet!
there should be the option to upgrade it but actually retain the chosen structure design, example being, why not maximum upgrade a Japanese home but even though it's population is the same as a skyscraper it can still be a humble half timbered Japanese house.
also with all the new updates, it's hard to determine where this game is going. I am very happy for speed token houses , just wished that was introduced from the start!