The problem with the 'endgame' is that it tries to negate all of the previous content. With each update, more and more of yesteryear's content becomes meaningless, with huge chunks of game being effectively skipped over by new players because they can outgear it in days. The rewards in this game are such that only the very best equipment is actually worth pursuing, and anything else is a stop-gap.

The problem we face now is that these stop-gaps are so close together that many players can skip over several in one bound. New jobs are going from level 55 to 90 in one bound, and then straight on to 120 or higher. This will only worsen as more high strength gear is released and more of yesterday's quests and dungeons become obsolete. The life-support that is the zodiac quest will be dead once Heavensward arrives, and I don't expect they'll be focused enough on vanilla gameplay to fix it afterwards.