Frank is an idiot for not starting him
What's the chances you think he can be the next great big man?
They did the same thing with Monroe, Drummond will probably end up starting the last 30 games of the season.
If he wants to be the next great big man he could be, every last tool you can think of is there from mobility to coordination to running the floor like a guard. I normally don't say this, but how good he wants to be is completely up to him, there isn't a big man in the league as gifted as him physically. He has massive legs to be a dominant post player, just all about his mindset, you'll notice for all his athleticism you rarely see him bang on people.
He outweighs JaVale and DeAndre by 20-30lbs, and looks like he could put on another 20lbs easy without any type of hit to his athleticism. He's the best piece of clay in the NBA, and probably the best one to come along in a very long time.