If I was to desire displacement immunity, I'd like it to last longer with a longer cooldown to compensate. Currently Counterspell does this and more. Hell, viscous has the most annoying displacement in the game, and that just requires a normal parry to beat.
I do like a way of dealing with displacement immunity, but I feel it should either automatically nullify a single instance to allow for counterplay, like spellbreaker, or be a longer buff with a longer cooldown.