Don't know if it's been suggested before, but here's a suggestion I also posted in the Screenshot thread: how about making it possible for rebels to 'break' the government? For example the requirement could be that the capital is held by rebels for a certain amount of time. Then, when the 'break' (=revolution) happens, a new government is put in place along with very different slider settings, a part of the rebel divisions switch to the new regime (i.e. become owned by the country), while other rebel divisions stay rebels. Any loyalist divisions (i.e. owned by the country when the break happens) become rebels. This way, the game could simulate a civil war.