They could do a better job at matcmaking for sure, but to be honest, do you think people will really use it and then will people be willing to team up with randoms not knowing if they will have propper communication etc, there will be a lot of variables in play especially looking at raid matchmaking, wouldnt hurt but the way it will work will have to be fine tuned if they do so and then putting penalties in place for people leaving will stop them from hopping around but that would be unfair because if you dont want to play with certain people you shouldnt have to, all im saying its always been easier having a set group of friends to play with