Would it be possible to have an option in the town window in OTTD to limit the town's population - for example, dictating that a town could grow no bigger than xpeople. Or perhaps specifying town boundaries on the map.
I can see a couple of advantages...
-keeping smaller towns and villages from becoming huge cities: I don't like how in lots of games you end up with a map containing just a load of cities
-stopping big cities from eating up smaller neighbouring towns, or destroying your carefully made scenario landscape!
-also, this could help stop small stations that you haven't room to expand getting too busy (I know someone else has suggested making a passenger limit function, which is a good idea)
Sorry if this has been mentioned before...
