I am not sure you need the -50 for each additional race as you can code it to close the borders of all of the remaining race selections if you control at least one race. The interesting thing is that in a nukes game you could loose your race then select a completely different race.
I would also consider modifying the lose condition to losing more than just the capital. Again in a Nukes game it sucks when losing a single territory can eliminate you from the game. And can make it attractive as a strategy in multi-player games to simply stack on one player who then steamrollers as fast as possible to your capital.
I love the ideas in this map. It's as almost as if you reached into my brain and plucked out several concepts I was looking at for a Krazy Kingdoms sequel map
Great Job!
=D13=