although I don't want this to digress, IMHO, into that being the only consideration, or that that's Kupp's only great attribute. Never the less...

Yeah, me too. Geez, I thought I was the only one. I would venture to say that for NFL QB's that would be the most requested talent a WR possesses. Sure, there are others... fighting for the ball, the ability to out-leap defenders, being clutch... etc etc... all of which are vitally important... but running routes, getting space... I don't think anything trumps that.