I kind of like the idea of going through the first half of the year as is. It will give us a chance to evaluate Patrick Obryant a bit and develop Big Baby further.
Also, I feel that Leon's play last year, paticularly in big games, warrants him the opportunity to expand his role this year as our primary backup 4/5.
That said, the only way I see us NOT adding a another center down the road is if the TA/Scal platoon at 3 doesn't work out, or if one of our backup pgs get hurt.
Ainge has put together a lineup that affords us the luxery of wait and see.