Ti has the classic flawed approach to AI diplomacy, namely when you grow stronger, AI starts to hate you. This creates annoying and boring endgame where you're either mopping up to the bitter end or in this game play endless whack an agent as factions cannot be wiped out.
A more natural approach is to turn it on It's head. Ai respects strength and wants to be friends with a winner, conversely weakness is blood in the water.
So any way of nodding this to flip the mechanic from hate to love, at least with ideologically compatible factions? Alien lovers of course should hate strong resistance.
In general making AI respect NAP and agreeing to it even if you're ahead would be nice.