We have had some discussion of who likely allies and rivals will be. A fundamental geopolitical issue is rivalry between neighbors. I assume that team Mad is located along the coast between Team Saturn and Team Cav.
I guess a bit regarding the other teams borders but the following is what I come up with.
Kaz borders Sancta and Cav
Cav borders Kaz, Sat, San, Mad
San borders Kaz, Sat, Cav?
Sat borders Sat, San, Cav
Mad borders Sat, Cav
This leads me to conclude that us and team Mad have the best placement as we are in corners where only two other civs are at our borders. Cav is in the worst position as they border everyone.
I think that in the long-term a close alliance between us and team Mad will be the most useful. Sancta will also want a similar alliance but we have some advantage here as we did started developing a relationship 1st.
With that said, I place little faith in relationships. The point of the game is to win and any team that relies on allies for protection will be killed. Our best way to keep a close alliance is to maintain tech parity at a level above our rival. That way their is a mutual incentive to trade with each other and not with another team.