A little request: Able to redo Main quest; Bigger dungeon

Hi there.
As a RP player, I would really like to be able to do the main quest again, if possible in a different city-state. So I wonder if it is too trouble to ask for a the service ? You can charge players that would like to do the main quest again, changing city-state. It would be nice.
And I really like the old dungeons. The ARR dungeons do not leave any room for exploring, everything is a line from A to B to C. If there is a dungeon that a group can explore, RP or for archive like in 1.0 it would be nice