1) On Impossible/Endless difficulty, the AI is willing to give me stuff for Peace which seems a little awkward when they're so far ahead in everything. Sometimes they're willing to just give me stuff for free also. With them being more powerful, it feel like they should use that leverage against me.



2) Tier 3 Iron Chestpiece (Era3) and Tier 1 Dust Chestpiece(Era 4) have exactly the same stats.

Balance, balance and re-balance.

2. The dust chestplate also costs more production and a small amount of dust for those same stats and definitely should be fixed.

On the other hand, even if the AI is getting beaten to a pulp and has his last city sieged by you with 0 fortification points left, he will not trade research for peace unless I throw in an extra 3 techs for each one of his. They'd rather die than give you techs. I agree that you shouldn't be able to milk one endless-level AI for all his techs and be on par with the others, but they should be more submissive if they're on their last leg!