Is it possible that:
- Units can be made to "drain" one pop of a type assigned to their unit type on recruitment? If so, can those pops be settled like migrating hordes do (but even individually), while keeping their original culture/religion/pop type?
- We can add modifiers or abilities to culture/religion groups?
- Units can require more than one resource, say horses and iron? Can we remove unit types?
- Power costs can be changed to another resource? Like "move slaves" requiring gold or "military inventions" requiring military power instead of civic? Or have the cost depend on ruler's and/or target characters matching attribute? Say for "make friends", oratory power cost = (x + rulers charisma) - target's charisma.
- Resources can be removed entirely or be changed to fit another resource category in the interface? Is the interface size in general adaptive to some degree of changes or would it need interface modding to exceed its preset size?
- Omens can fire events depending on conditions, for example high priest (position/job) loalty?
- The game can track manpower percentage and tie it to modifiers? Or track power resource amount and tie it to modifiers?
- For tribes, player controled clan chiefs have their own retinue like AI ones? If so, can the mechanic also be used for non-tribal governments to represent a king's retinue or a standing/elite unit?
- We can have specific idea sets for states or culture groups and increase/reduce the total number of ideas? Is the same possible for inventions?
- Will the unmodded AI be able to handle customized content, like new unit types or heavily altered governor policies?
- Forts can be changed to reduce enemy supply limit in adjacent cities, instead of having the effect of taking over them and blocking movement? How moddable are the 4 building types' effects and requirements?
- We can change military tradition paths to be tiered instead of linear, or have other forms of requirements?
Lastly, more of a suggestion than a modding question. You could have an enhanced "move pops" interface where the player can hover over each city and see the total cost of instantly moving the pop there, and click to move it. It would remove a lot of tedious micro.
That's it for now, sorry in advance if I have missed public answers to some of them.