We used to have a revolution mod for cIV in which u could get rebels in a conquered cities. If they capture ur city, the old civ could revive again or u simply give up the city to the rebels (similar scenario to the Afghan War). I actually suggested the rebel spawning method for captured cities in VEM through events but it was rejected
Anyway I don't really think Firaxis are going to add any complex mechanism, we would have to wait for dll so a modder can add these features in.