Never happened for me
I wanted a more "stone-age"-ish mod with a longer ancient era. One (easier) way to increase it is adding more techs. An other (harder) way is to add more micromanagement. Right now I'm working on the second and if I can add enough content for that than I will consider removing such "dummy" techs as Fire, Counting, etc.
Stance is the actual goal of your government. It may promote war through Belligerence or Mobilization, or peace by Prosperity. Consider it a kind of "propaganda" category.
Modular modding has it's limitations. E.g. Civics present in the main mod are always loaded before the added ones in modules.
Same as above. I can only fix that by modding the original files which I don't want right now.