Sometimes I am fighting a tribe with another tribe and we developed a Angel Halo status. Once we are allies like this I should be able to communicate with them like sharing technology or giving them coins for war support. The ability to travel their roads, and heal their units with my own mind bender. But if I were to attack them or take their city, the alliance is broken. Or before any war and fighting starts, have the chance to Ally with an neighboring tribe. This would work well with a new mode like Perfection but the turn limited moved up to 50 or 60. So AI are pressured to attack from their enconomic status or point status, instead of the dominate everyone mindset the AI usually have.