[Puke]

I suggest you rename the game "White Man's Burden," in honor of Kipling and imperialist opression.

seriously tho, maybe you should setup the map with fixed starting locations, so each player has a neutral to guard. then rules could be that if you lose your neutral protectorate, you are out of the game. or maybe, you have to conquer someone else and take their neutral. maybe set a 100 turn limit in a small quadrant, and whoever is protecting the strongest neutral(s) at that time, wins. of course, you will have to disable gifting so that everyone does not give their neutrals all their planets on the Last turn.