Quote Originally Posted by Evangela View Post
because there's no hope for DF group to even get pass phase 1 of any of those content.
A DF group has as much chance as a PF group does, and the later is allowed. Both are random pick-up-groups, it's just that one is limited to forming from your own server and the other can bring in players from across multiple servers. A wider pool of players to join with just makes the groups form quicker, it doesn't make any difference to your chances of getting good or bad teammates.