I'd rather play a job than a role. I see no reason why Caster need all be glass cannons or all support-DPS. I prefer the variety we have, and would even like to see that variety expanded upon.

As it stands, Role Actions still muddle that diversity, making it sort of trip over itself when on one extreme or the other, but the value of Role Actions, if their capacities were just accounted for, is almost nill.
Just remove their bloat and give higher base MP regeneration, more ways to counterattack interrupts, more immediate and reliable ways to deal with brief but sustained forced movement (still varying Caster to Caster), and their own utilities into the class kits themselves.

Voila, no more role identity confusion. You're quite simply a BLM, a RDM, or a SMN. Where party utility exists for these it is noticeable, cohesive, and strong, but comes at cost of dps as not to make it obligatory to balance downward from.