It would be nice if Ice spikes actually lasted longer or it's debuff happened more often. Also the combos should feel like they actually do something. One of the problems this job had in XI was with the whole older spells becoming useless and only equipped so you could get a buff or like their sleeps where a monster might resist a dark based sleep. Maybe up the learning chance for the non open world spells so that even if you have blue mages that have the spell in the party but they're helping a late bloomer learn something that's needed for a job quest they don't have to repeat the fight or whatever an absurd amount of times.