Quote Originally Posted by Hollowed View Post
I would support this idea for two reasons. 1: Players will find their own way of doing this anyway, so it is impossible for SE to stop it (jerks or otherwise) 2: Each and every player has the RIGHT to decide who they want to play with, jerk or not. If they only wish to play with people who have cleared already they have the right to do that. It isn't about nice or mean, its about freedom to choose, which we all have.
Funny story, you already have this freedom. It's called Party Finder. You don't want to join 'da newbs', then build your own party and you'll never need to team with them again.

Locking off content like the suggestion just means that new players will literally be unable to play on DF, forcing them to build parties of only-new players. That would be far more difficult than other players trying to find people who HAVE completed it.