Oh wow... I just typed something on another thread about Parker, and then I came here and read this.
I dont know if I am standing alone, but there is stuff I've seen from Devante Parker that is keeping me more and more not wanting to draft him... especially that highly. From watching films, he has great footwork, great hands and great speed. The issues I see often is he isnt an aggressive route runner in any way. At 6'3'' 208, he doesnt use his size at all to help him in routes, and he rounds off his routes as well. He doesnt create consistent separation, especially in his deep routes. These were continuous issues I keep seeing.
Amari Cooper and Kevin White, I would definitely take before Parker (there may be other WRs too I would). But even out of those two, Kevin White would be the guy I would draft, and I choose this very slimly, because both talents I think are quite comparable in most ways.