To further clarify:

I have several characters at level 90, and because of how dungeons (duty roulette) currently works, I don't even use the majority of my abilities 60% of the time I am playing the game.

On top of being handicapped most of the time playing, I get so used to playing without my abilities that I have to constantly reprogram how I play or handle fights.

Recommendation:

Players should have access to all the abilities they have unlocked for their job; then simply scaled accordingly.

This would additionally get newer players more excited to reach higher milestones when they see ninjas summoning frogs, and paladins enveloping players in giant wings.

Does anyone else feel this way?