That's fair, English. He does round some of his routes I've noticed, but not all, and I think it goes without saying he'll need to develop, but the skill set is there, imo. I'm surprised you don't see much of Miller or Gronk. Watching both those games, He's a consistent pass-catcher like Miller who catches the ball with his hands and displays good awareness after the catch, ready to turn-up field as soon has he makes a reception to get some YAC. Blocking, he's a grinder who can pull on a run play and is capable of driving or at least maintaining his ground at the LOS. He's also pretty good at chip blocking before reaching the second level.
Maybe it's just his play responsibility that is similar to Miller, because he's asked to do a lot of the same things Miller is asked to do, from the run game to the passing game.
"People who don't punch their ponies in the face make me sick." - Louis C.K.