•Most people don't use mics in match made activities. These lead to complications that will result in many wipes which will take more time than actually making a group. Denying that it will is unrealistic. -How will people communicate who's sword bearer? -Who's running relic? -When to shoot Crota? -What planet you got teleported to? -What strategy we're using for Crota? -When the devouring essence will consume me? •How will checkpoints work? -If someone has a checkpoint, how will they avoid having to do it all over again? -Will they even get the checkpoint? •How will kicking work? -How do you implement kicking system that can't be abused by elitist? -How will you defend this against trolls? •AFKer's -How will they be dealt with? -If the kicking system is in place then what will stop people from kicking someone who really isn't AFK, maybe switching controllers? -Will they get a checkpoint? -If there is no kicking system, AFKer's will slow down the raid exponentially. •Group options -What if a team simply needs a swordbearer because all the people who got matchmade in doesn't know how to swordbear or run relic? Then you'd have to let someone figure it out, or leave, both options will waste more time than making a group. •Unprepared guardians -Imagine this scenario, you're matchmade with a level 33 for skolas. Can you complete it? Yes, but you will likely wipe because of him and he does less damage. So it will take longer than if you made a team of all 34s. You could leave but then you would still waste time. Conclusion: Matchmaking presents a host of problems, many of which make doing endgame activities a pain and results in more time spent doing the activity with these handicaps than it would have taken to make a fireteam. This is a relatively short list since I made it cooking some chicken tenders and tater tots for the kids. An in game group finder similar to LFG would be better for raids and Skolas. Night falls should have matchmaking. And before you say "Just don't use it" or "I'm ok with these consequences" I want to say then you are, I'm not being mean, but by definition ignorant to the facts. You are purposely overseeing the problems to come to your own agenda. Not to mention if you really wanted this system, you'd brainstorm on how to fix these problems. I will reiterate, In game LFG > Matchmaking