The thing is, that doesn't change the relative strength of the job. The QoL issues presented here don't really occur as the mastery of the job increases. The Umbral Heart change would be welcome, but again, its impact would be fairly minor. Forced movement phases are planned in advance, with minor ones covered by sharp and swift, and major ones covered by Triple.

Easing someone's path up Black mage's stairs is fine, but you're still a few steps short of the next floor.