Duty Finder Re-Do Option

So I found out the other day that the DF actually works by putting people from different servers into the same party, somehow. Initially I thought if you found a good party that worked you could meet up and do it again. Obviously that's not possible, but what if there was an option that let you re-do the dungeon with your current party after the boss at the end is defeated? Would that work? After all, nobody likes to wait in DF queue for hours at a time waiting on a party that has (from my experience with using it) roughly a 70% chance of one or more people being miserable at their roles, rude, etc.

If you could just redo the dungeon then the DF ques would be way longer and you'd never get in. You're best bet is to either look for a group in your own server around the dungeon entrance or a nearby camp, or you could join a good FC.