You don't restore job balance by buffing everyone else, you're assuming that your job is the one balanced and the other two aren't, you don't see it from the point of view that AST is the one that is too ahead for all the utility they offer on top of healing.

If devs start going around with a buffing stick every time there's a balance issue we'll eventually reach a problem with power creep, with super high number and a super high gap between jobs.