Our FC had an awesome event where we got into groups of four with whoever we wanted on any jobs, put on max lvl 12 gear and ran dungeons starting with Sastasha and going down the list only adding gear upgrades that dropped in the dungeons. My "leftovers" group made it to the final boss of Haukke Manor. I believe we could have cleared it with a different tank (two people in the party had only leveled their chosen job to Haukke so there still would have been an artificial wall). It was amazingly fun.