Fast, Smooth, soft hands, agile, good route runner, has it all for a receiver IMO. But he has something else that may give him an edge and our OC Miller alluded to it in a recent interview. It was said that he already knows the playbook like the back of his hand. He knows where he is supposed to be and when he is supposed to be there making it very easy for the QB's to find him and find him fast. He also has a knack for finding and squatting in the zone coverages that are given to him. Of which I think we have all already seen in the preseason.
It would be nice if he learns to at least become an average blocker but in the mean time I like what I see, and I like it a lot.
As for the other TE's, Dray and King. I absolutely love their blocking abilities on the edge.