TheoTown

Maybe it already works this way... But
Maybe make the buildings that spawn depend on their neighbors
For example a T building will attract T buildings and TTT buildings will attract TTT buildings
To make it more realistic so skyscrapers bunch up to together and others build around it
Or something like that

Well if it works that way. Higher levels cant build. Idk.

I think you could do this with fun

That's actually implemented. The thing is that it's just some kind of favor so that buildings of lower level will be built if no other buildings fits right now.