Here's my list of suggestions:



Executing Stockpiles on a city is a pain - 4 clicks. As Cultists, I currently have 172 on turn 206 (and don't want to use them anymore).



For assimilated factions, indicate how many pacified villages you have of each to help with decision making.



Show the progress for political victory.



Have a proximity warning for enemies that can attack a city, or allow a one-time sally forth before a siege begins.