Duty Finder-be unprepared, go in without knowing anything about the fights with minimal gear etc etc, learn the fight, have fun!
Party Finder-know the fight, know what it takes to win, don't join unless you can meet the criteria of the party leader (ilevel, exp, 2 fails=kick etc)

I have found this to be hands down the best way to clear endgame content. I never expect a clear in DF, but I DO expect one in a PF, unless one specifically states that its a training party. That's the awesome thing about PF, you can join like minded people who wont ragequit on the 2nd wipe, and actually care about progressing during the fight. I just don't see a problem with this current configuration. I learned Ultima HM from DF, and got the clear from PF. If people are accepting of this configuration, content will never be a problem!