Tried a Julia campaign but put it down after about 40 turns because the CAI offered no challenge whatsoever. CAI is not aggressive, doesn't seem to build enough units or use them in campaign. I felt as though I could have played through the entire game and never had a battle that couldn't be easily auto-resolved.
I did like the happiness changes.
For some reason once I got to six units in my two fleets I was unable to recruit additional naval units. I enjoyed your naval battle changes though!
In land battles the routing seemed abrupt. I did like the pila changes though and the speed is better.