I like Knox trying to post up even though he didn't finish it, he's got the size and strength at 3 to do it regularly.
I would rather have him be an oversized 3 than a 'quick' 4. I feel it's very important for a young player to have consistency while developing. But coaches often think they're the smartest people in the league. Remember Sonics wasting KD's rookie season playing him as PG/SG. Do simple things instead of trying to invent something new.
Coaching staff has to figure out quickly what they want to do with him. Hopefully they don't pull same shyt they did with Frank. "He's definitely PG, he's a PG that plays off the ball, he can play SG, he has the size to guard SF so we'll stick him there, we're playing position-less basketball"
If I ever hear anyone say 'POSITIONLESS BASKETBALL' I'll choke somebody out.