Thread Closed
I just want to point out one thing that I don't think has been brought up: Concerns about higher level players robbing you of a chance to experience levelling content as it was designed are completely null and void due to level scaling.
If you want to do a level 20 dungeon, you can advertise freely, and anyone who joins you will be bumped down to an appropriate level. Even having the very best endgame gear will not matter, as level scaling causes your gear's stats to be equivalent to a much lower quality while in effect. No worries about FATEs, either, as being overlevelled will result in receiving no rewards, so scaling down will be standard (and I believe something the game does by default unless you specifically override it).
If you want to do a level 20 dungeon, you can advertise freely, and anyone who joins you will be bumped down to an appropriate level. Even having the very best endgame gear will not matter, as level scaling causes your gear's stats to be equivalent to a much lower quality while in effect. No worries about FATEs, either, as being overlevelled will result in receiving no rewards, so scaling down will be standard (and I believe something the game does by default unless you specifically override it).