I feel like the thing that is underestimated about Fultz is that wingspan. With that 6'10 wingspan it is really, really hard to bother his shot. He can shoot those jumpers at will. And he is so crafty and good at creating space that it's almost an impossibility to bother his shot.
He may not have Wall-level athleticism, but he appears to have Harden-level athleticism. The ability to change gears, the elusiveness and handle to create his own shot. That will drive defense nuts more than just straight line speed.
And to top that all off, his passing is incredible. Because the defense must respect his shot and his ability to dribble to create his shot, it becomes even more devastating when he passes it to the open man. You know the way Horford has made our shooters even more efficient with his great passing as a big man? Add Fultz to the equation and we might just "break the game". It's the TILT sign on the pinball machine. It would be a LOT of fun to watch Fultz added to this offense and see how Stevens could utilize him.
Defensively he has the tools to deny and bother opposing guards. 6'10 wingspan, high steal and block rate for his position. Just needs to learn how to lockdown and he would have able mentors to go against every day in practice in Bradley and Smart.
I gotta say, even if Guard isn't a need, if we land the #1 pick, we have to pick Fultz. He's the definition of mismatch. And in a world where shooters are favored, he could have a Curry-like or Harden-like impact for our team!