Has it been discussed before to allow nobles to partially pay their units? Would be useful for when your out on campaign and go to pay your unit and your a few gold short of paying them for the last 7 days if you could at least pay them for the last 6 days and stay in the field longer. Would allow for longer campaigns in enemy territory or make it more feasible to have a campaign in an enemy territory on the other side of the continent, much like a crusade no?
