Just a nice to have. A flag per side that a scenario designer could set to give immediate 100% military control of a region if only friendly units exist in the region.
Reason I mention this - in the Pontiac scenario small British outposts deep in Indian territory are taken by the Indians and the scenario shows the objective is controlled by the Indian player giving VP - however the British still have 65% control of the region and if the Indian player leaves the region he will then lose the VP. He has to keep a unit there until the control % is in the Indian favour.
Not many players would know this and it could prove frustrating to players.
(And I wonder what the AI does in a position like this?)
Cheers, Chris