The thread about moving militia got me thinking about how expanding on the generals ability would be helpful but not approach a mobile militia type thing. Two ways of doing it:
1-Fairly open ended: Allowing lords of a region to have the same ability as the general where if when in their own region they could assign a militia unit to someone?
2-More closed: Allowing the local lord to take control of a militia unit from his region, but only take control of it not actually assign it to anyone else?
I prefer the second option myself perhaps because it isn't too powerful and it makes reasonable sense when I think it out. I have no unit and I'm in my region so I go to the captain of the guard and say grab some of your men and come with me.