I agree with you, Rollie, I think Zeller is a player who thrives in space and who needs a consistent role in the offense. He has neither with the team so far this season.
I think the problem for Lee and Zeller is that they are too similar. They both want to pass a little bit out of the high post, set picks, roll to the rim, and occasionally take an open 15 footer. They're also getting choked by the lack of spacing with three mediocre shooters (who are also mediocre at creating for others) in Smart, Bradley, and Crowder sharing the floor with them.