Urban planners are the last century! There are plenty of such games on ipad, android, etc… If you want to continue this genre, you should invent something new in it that no one has done before. I have one idea, it would be possible to make an urban planner in backrooms! Just imagine if this happened, how would people survive there!? Like managing a group of survivors in backrooms, exploring levels, and so on and so forth…
I already have a project on backrooms, but it’s only related to endless procedural generation. Surely you’ve already seen my topic → endless-backrooms-in-babylon-js.