Drummond's combo of size and leaping ability is off the charts/elite/freakish. He basically gets all those rebounds by just outjumping the opposition. Other than that:
* Poor motor/motivation. This was a red flag already at the draft, and haven't changed.
* Weak mentally. Starts pouting when things go bad, which they routinely do against better opposition. Zero leadership potential. No clutch gene.
* Poor BB IQ on both ends. Bad positioning. No anticipation. Bite pump fakes too easily.
* Doesn't use his body when rebounding. Just outjumps opposition. Imagine what he could do if he used his strength properly. But the fact is he doesn't like contact.
* And of course cannot shoot; the worst FT shooter in the history of the NBA.
In summary, thanks but no thanks.