Well for one thing it'll give us a good reason to level a job, and hopefully by the end of the lv cap we'll get new traits or abilities.

Like an aoe stoneskin for whm or king mog egi for summoner.

I'd rather lv up a job to complete quests rather than save up tomes/gear to get the ilv needed to complete a quest.

Other than a relic quest there's really not much else to do for me to look forward to other than collecting gear.