Crush, here is something else to consider: Donnie and MDA wanted to keep Lee's value as high as they could because they knew they had to trade him. And perhaps they also wanted to keep the #'s for Chandler and Gallo VERY high to show the likes of LeBron, Amare, Wade, Bosh, JJohnson that those 2 were value pieces to play next to.
And considering that, and knowing that TD is not really a facilitator of a PG, does it really make sense to play him all the time?
What you are asking for is a black and white scenario or a formula for minutes played for TD that is impossible to pinpoint and not really worth spending time on. At this point, who cares.