I don't know if these are possible. I was hoping someone who has experience can tell me what they think. I can mod stuff but I'm not familiar with engine enough to really know what's possible.
I think one major thing that holds this game (And Vicy II for that matter) back (even though it is amazing) is you got these great population stats but no way to impact them, really. So I thought, spawning some civilian units might be cool.
1. Newspaper - Build a newspaper. Very low mobility. My thought is basically give it the military police ability to pacify a region. No offensive/defensive power. I think this is doable and easy enough.
2. Agent - Like newspaper but mobile.
3. Is there a way to make sort of a spy? A unit that can cross borders without a war or a treaty? IF so can do the same as #2 except a negative population impact. I doubt this is possible.
4. Builders who build stuff other than railroads. Can I get my pioneers/engineers to speed up depot construction? Factory construction?