Oh don't get me wrong, I don't think it's all that important at all, to be honest. It was just being heavily talked about for some reason. As you said, big receivers don't usually have quickness. V.Jax, Megatron, Marshall, A.Johnson, Floyd, etc/ All established, some faster than others, none all that quick. For me, Waller has speed, very good hands, size, ability to high point a pass, and the willingness to fight for a pass. There is honestly no reason we shouldn't at minimum use him like Pittsburgh used Bryant. No matter how poor of a route runner he may or may not be, running a straight line and catch a pass shouldn't be hard and with his measurables, it would be very hard to stop. He can improve his routes as he gains experience