I do not mind level cap quests, but one thing I want to happen that I really diddn't see in FFXI was have such limit break quests be tied to the game's lore. Something that makes the breach of self limits really feel like it was something of signifigance to yourself and the world around you.

For the classes in the game outside Blue Mage, Puppetmaster, Corsair, Dancer, and Scholar, there did not feel any significance, you beat up an old man and watched him reminisce about the growing of Jeuno. It didn't matter what job you did it on, which kinda make those core jobs feel flat and uniform.

If I'm going to break level cap on my lancer, I want that quest to be significant to my Lancer, like the Guild Leader taking me out for a trip to tell me I've hit a roadblock in my training, and assuring me through some sort of trial (perhaps involving Greenwrath, that I seem to be able to brazenly ignore) that I can go higher.

Or for my Gladiator, I get pitted in the Arena to press my skills, where I meet some rival that hands me my but, only to pick me up off my rump later on to tell me to keep at it cause I have potential.

I want the entirety of my level cap breaking experience to feel like it belongs to me as the classes I chose to bring up, not some silly generic fetch quest.

Anyways, those are my thoughts on it.