A lot of potential here. Might be worth considering using the houses built to accumulate a secondary wealth very slowly and make building the town/city a second layer of prestige. (i.e build 50 houses to earn 3 city coins that can then be used to purchase a % building increase and resets your progress), just ideas. I'm looking forward to seeing what you do with the game!
Thank you! I'm working in something like that. Where you can design and then build your owns houses, and develop a little city. I hope I don't get out of scope. :)