Raid matchmaking is already here. Think about it, forum topics titled "XBONE RAID HARD MODE" or messages from random strangers on the tower inviting you to a raid group? These are both pseudo matchmaking systems put in place by the community to fill the void between players who have lots of online friends with time and ability and those who, for whatever reason, simply do not. Adding an actual matchmaking function to the raid would be nothing more than cutting out the middle man. There is a harsh barrier between certain players and the raid, and it is not skill based. The only thing that should be preventing people from completing the raid is an inability to complete the presented tasks. This barrier to entry expresses a level of exclusivity that favors extroverted players.