I would bet a lot.

My memory is that you could make multi-level lobbies on the first floor and you'd end up with like a grand staircase.

Edit: Apparently just pillars no staircase - https://old.reddit.com/r/SimTower/comments/1q63yvc/a_nice_to...

Yeah the simulation also seems to have some bugs. I saw a person get stuck waiting for an elevator for hours when all the elevators were idle. He got more and more pissed off until he eventually despawned overnight.

I agree that you need to be able to produce source code that matches the original binary before you can start porting things.