I totally missed the boat on Watford.
Two things really stand out to me about him.
1. He can dribble the ball. I can't think of many forwards we've had that I feel this comfortable bringing the ball up the floor against pressure. Reminds me a bit of Batum in that respect, and that's a BIG advantage to have someone other than a guard who is that solid with the handle.
2. He's very savvy, especially considering his age. He's physically limited, but he must be a sponge when it comes to accepting coaching and picking things up. You could actually see him noticeably improve from game to game in some respects. Plus, he makes foul shots. Fundamentally, he's solid.
The athletic limitations probably stick him as a back-up 4 if you figure him into the rotation of a team that could win in the playoffs, but I've changed my opinion on him. He's got what it takes to stick or even to be a chip in a trade.