No civilwar in EB is a weakness compared to say RTR:PE Imparetor mod, where there is a dedicated senate revolt fraction that comes up when a rouge general was at, say a remote provence, or a revolting city.

But then again, i understand the weakness of the AI in RTW instead of BI engine, so I doubt the guys here in EB can actually add tha function. BI is a whole new ball park in terms of flexibility.