Haha there's so much flavour in this! Love the senate standings idea, and how it incentivizes factions to interact with the mechanic. I'll be interested to see if their a bit overpowered though, as their scoring mechanic seems pretty strong and sorta tough to stop.
I'm also a lil concerned about "enforce peace", not recruiting because you rule seems like a nightmare for some factions. Imagine you put 4 warriors on the WA's first base, they are immediately cooked for the game. They could battle you sure, but if they don't regain rule there is little coming back, especially to keep up with game pace. Same could be said for birds, rats n badgers to a lesser extent.
Still live the game mechanics you've cooked up though, adds a lot of interaction which is always fantastic. Thanks for the submission :)