The best example in XIV I can think of was Drg's lv 50 job quest that rewarded Dragonfire Dive when it was done in roughly ilvl 50-55 gear and without the echo buff. (The echo buff I hate with a passion, thankfully its removable) Sch and Smn didn't have anything like it in ARR. Drg to 70 has had nothing else like it. Sch to 80 has had nothing else like it. While I haven't got a ton of jobs leveled yet, its kinda clear from some of the late game play you see not many jobs have job specific quests that checked if you really knew your job. The shadowbringer healer role quest sure didn't really check it either.
It doesn't have to all be super hard content, maybe more akin to a series of trials that get progressively harder. Like for one tank set, have to kill X, Y, Z mobs in a set amount of time but the key to completing the Y and Z trials is doing the same actions that a larger pull would need to succeed multiple times in a row, all leading up to some more extreme challenges for some of the final and more marginal perks.
