While it is fine to regard everyone as a rival (and they are) for a while we will need friends, too. With 5 teams we are looking at either 3 vs. 2 or 2 vs. 2 vs. 1. Of these teams, which one can help us the most? Tech and resource trading come to mind, as well as war-buddies. Don't forget that the human equation is just as important as the game equation. We may have the best all around leader, but that is worthless if we make our neighbors angry with us.