my thoughts:
1) the front court is deep but the overall level is just average. no matter who is in, there is a glaring weakness, be it shooting, post play, post D, mobile D, passing, length, bulk, etc etc.
2) tony had a bad night, if not for that we likely win tonight; still, chandler is obviously a big improvement for the mavs.
3) pop needs to either settle on a rotation (especially since we were coming from a long win streak with a somewhat defined rotation) or go ahead and see what he has with splitter and neal. those guys will have a very hard time finding their roles on the team if pop is going to yank them around so much
4) manu can handle the minutes provided he is getting help during those minutes. but if he has to carry the offense for 33+, then yes it is detrimental in the long run. it hurt to see duncan fumble/miss some of the opportunities manu tried to create for him inside, we sorely missed those kind of easy assisted baskets
5) if i were pop/RC, I would explore trading any combination of blair/bonner/splitter/mcdyess/hill/RJ/neal for more proven all around players. you can only play 5 guys at a time; tim and manu can't carry 4 mediocre guys at a time anymore, and pop hasnt shown he can get the best of that kind of depth IMO. it feels like we have too many specialists around the big 3