It's now my broken record but I've come to the conclusion that the Celts have enough scorers, in particular, the back court.
We lack, outside of Perks, top flight rebounders. Pierce is the Celts best man, in this dept, with KG/Powe sidelined. Remember, he did this from 2003 to 2005.
I think Doc should take Paul aside and tell him the Truth (pun intended) that the Celts need him to mop up the boards to win in the end.
What that would mean is a shift from the 24 ppg/6 rpg to 18 ppg / 11 rpg without really needing to play him at the 4, other than for a few occasions, here and there. He can still take critical shots, now and then, but the primary offense should start with Rondo and either end with him or one of the other guards, unless the frontline has a clear look.