There's an excellent article up at the Chronicle blog about the matrix of each player's offensive rating as related to their possession usage:

New Year's Resolutions

Andre for example is leading the country in effective fg % and true shooting % and is second in offensive rating, but he uses less than 15% of Duke's possessions. Here's the team numbers from Pomeroy's stats. Granted his efficiency will probably go down if his usage goes up, but he should still probably be more involved in the offense...

The best part of this article is the bottom right of the quadrant, where Duke has no one in the high possession/low efficiency department.

I'm intrigued by how this chart might look for other top-ten teams, or the rest of the ACC for that matter.