Don't need to upgrade them all, which isn't realistic in any case. But do need at least one more Barnes-or-better level guy to play 35 min opposite him. That would be sweet.
For the most part, Fox has done this too of late. The only threes he seems to take are pull-up threes that mainly just serve as a way to force defenders to play him closer on the perimeter.
Friendly reminder: Trey Lyles is still only 26 years old. And according to the Detroit media, Casey was pushing him into being more physical in interior scoring.
Bulls D has fallen off a cliff without Caruso and Ball. But no one has been able to slow Vuc/Derozan at all and they've had one of the best offenses the last month.