It would be really hard to make it work with matchmaking. Look at what happened with iron banner. People would leave all the time. People would join a game, then see that the team is all 26s and leave. People may not be mic'd. People may be simply too shit to do it. It's intended to be extremely difficult and not all players of destiny are expected to complete it. If you'd done the raid, you would not be asking for match making.