There are definitely parts of his game that need to be polished, like you said blocking - not exactly a strength of his. I've also heard some criticize his route running, but I'm not sure if that's him or the system to be fair. I've also heard some players say he's "mean", which is good. Shorter WR with attitude, now who does that remind me of?.... The talent is undeniable. He can instantly contribute in the NFL as a lethal deep threat, and develop into something bigger, assuming he puts the work in.