To me it seems a bit strange having 198 places to build but only be able to use 100
So how about you could buy extra squares of land or you can only rent it for a monthly fee
then to stop people earning an amazing amount of money (no that theres anything wrong with it =P) but say you start with 60 places you can build but you can buy another 40 for 1 off payments which increase as you use them up, then maybe another 40 that you can rent
i know it might make the slow game slower but im just playing around with the idea, seems a waste for the other 98 places you see =]
Thanks