As of 2.1, a system will be introduced where you will be able to state if you are looking for people to: clear the story, learn the fights, or speedrun. This way people will be able to run with other link-minded people. This should remove most of these problems, as well as the "i want to watch CS" ones. Obviously if people try to get into the "grownup" group with crap gear they will be yelled at, but at least it will be for a reason -- if they are still gearing and not have gear for speedrun, them trying to sneak in will be entirely their fault.