Agreed,

Despite the fact it might be fun to fight at various fields, and small settlements for purely battle ground look, I think reality it won't be that valid.

I think it will almost be like the fort idea they had back in MTW2 Kingdoms. Yes, putting your people in the little areas caused slightly morale and financial reprecussions, but they were never enough of a impact to cause your opponent to sally out, unless he had overwhelming odds.

Sure if economic raiding led to revolts, or serious financial gains, or even hurting then immensely economically I'm all for it. My experience though has been so far, the AI has always been able to build units no matter how broke it *Should* be.