The strike matchmaking would be nice especially for the Nightfall and Weekly, but it says on a site that the raids are meant for you to get a group together and work together, so in other words its up to you to get raid teams together, I doubt they will add matchmaking for them, it would be nice but they are mean to test your skills and trust in one another. Now if they added a separate part of the tower you can go to, to find people who want to the raid, just to make it easier to find people that would be nice and it wouldn't be taking away from their original idea for the raid