I dunno. Unpurifyable actions aside, only one of which is non LB, and ALL of which have a short range, most times you can just treat your purify cooldown as a "wait this long until trying to engage again" cooldown. Your entire team has Purify cooldowns. Don't try to rely on yours alone for survival.

If you let the DRK out MNK or whatever catch up to you while it's still on cooldown, well, you either didn't fall back enough or your team is losing the engagement. All you can do is not let them get close to you when you're vulnerable, and if you do get caught, get caught somewhere where they can't stay very long without being ripped apart themselves.

I really don't see it as a big of a problem most folks feel on knee-jerk reaction. The old CC resistance existed because not every job had Purify, and especially healing was much less in the individual's hands. As it is now, your survival is much more manual and much less automatic/in the hands of your healers.

There's something to be said for certain jobs working better in Frontlines than others because the jobs aren't designed for Frontlines, but that has ALWAYS been the case, even in 2.3 with its original release, even with 4.0's PvP specific jobs implementation etc.

If it's a problem in everyone's eyes and they mean to adjust it, it won't solve job imbalances if they just equally apply the fixes like Purify Resilience giving KB resistance, they're gonna have to do something specific to the jobs themselves like when they finally fixed PLD Guardian in Onsal.