I still have hopes for Derrick Williams to be a full-time 3, but they've been dampered considerably by A) him not being on my 'pick 2' team, and B) him actually playing. Much better suited as a 4. Against LeBron though, I think he'd be interesting. Guy is stronger than Bron.
I would still like to see Derrick Williams developed as a power three instead of an undersized four. I think he has a higher ceiling there but it will take time and patience as he develops.
I have been very disappointed by the lack of touches in dangerous areas D.Williams receives when playing at the three. He should be in the low to mid post when catching the ball. Lots of elbow action. Areas where he can use his size and strength to his advantage.
Not standing out around the three point arc trying to space the floor for Minny's PGs dribble penetration game while those same PGs dribble the life out of the ball.
Put him areas where he can succeed + what he should be developed as for crying out loud.