The level cap quests need to be changed.

[Dragoniks]

Or leave them as is, and add an option to buy the limit breaks from the Moogle added in RoV, still would require returning every 5 levels, but drops most the annoyance, and fits with how they done a lot of the tedious stuff.

That would be the best option for impatient people.

Like assault, impatient ppl can buy the key item to get promote instead of doing the quests.