Running in a rather interesting 'problem'.
Seems most of the plate dps in the game is designed for Fury Warrior, who want Hit like there's no tomorow. DK however, only really need 9% hit.
So as you can see by looking at my sig - I'm way over cap. Heck, when I'm Unholy and I have a shadow priest, I'm actually hit capped for spell too... I'd be even more over cap if I got a titan steel helm made.
I suppose it will eventually fix itself... the T7 pants have less hit then my current pants and I'll hopefully get a weapon with no hit to replace my Destroyer... but after playing a Rogue, having too much hit is a novel sensation >_>.
Did Blizzard just forget to make plate dps with no hit? The stats quickly become waste itemization point for DK.