This would be a significant improvement over the current system, where it's often just one team stomping the other, which isn't a great experience. Skirmish just isn't very fun to play relative to DM pickups or BEAST tournaments, as a result of the teams being far more balanced in those matchmaking systems. Skirmish isn't a great first impression for new players either.
Whether they want to use this approach or some ranked system of their own making, it's quite important for the ecosystem of multiplayer that skirmish is improved, as the experience could deter players from sticking with the game.
Edit: I agree with Forsee that whatever matchmaking system they decide to go with for skirmish should be the only matchmaking system, in order to not split up the small multiplayer playerbase even further, which would make matchmaking even more difficult.