I'm not sure how that would be the case. I think the people with lots of friends would just go with their friends and the people on LFG posting "must have ghorn" will still be on LFG posting "must have ghorn". The match-making service will be full of people who aren't really prepared for what they are undertaking, and that will lead to more frustration than anything. This is, I think, the core of the issue though. You think match-making will make the game more fun for more players, and I think it will lead to frustration and ultimately the dumbing down of the end-game. The only way to really know for sure is to try what I previously suggested and create more complicated strike boss encounters. The update this week says that they are re-imagining some existing strikes in addition to the new ones they are adding. Perhaps they mean to implement just such a test?