Unless Parry is changed to give another attribute like crit or det for free, I will never see it as being useful. Parry is never the reason you live or die, it takes far too much of the attribute to do anything meaningful as well.
It's sad that, it is the only attribute meant to tanks in FFXIV, and no tank really wants it on their gear. It just underlines how poorly Square Enix understands how to make good itemization and core combat mechanics. Yes--the counters are top notch--the game is fun, but if you look at classes and base mechanics, its incredibly simplistic, uninteresting and needs a lot of work. Sadly, with no mention of it, I doubt itll be changed in Heavensward.