I don't think KO is elite but I do think he needs to shoot more. would much rather see him putting up 15-18 shots a game than AB.
he's a very good passer, best ball handler for a big man that I'm seeing in the league right now, has great hands and is really good at finishing around the basket. What I'm not liking is his D (although to me it seems he's gotten a little better this year), rebounding seem soft (and he doesn't box out as well as he needs to) and he's far too tentative on offense. looks to pass far more often than he should, especially when he's wide open for a shot.
If he gets more assertive in taking open shots, plays more in the post to vary his game and improves his D, I think he'll be a really good 6th man. I don't think he'll get to the point where he'd be a better starter than Sully at PF though