Why do people want to have an offense that emphasizes transition points?
Sacrifice wins for aesthetics by focusing the offense around a system that is devalued in the playoffs?
Denver and Golden State have been the best fast break teams for the better part of the last 8 years (ironic that when GS made it to the 2nd round it was 1) against each other 2) they were outside of the top 8 for the 2nd year in a row). In the playoffs, outlet passes=turnovers and fast break opportunities decrease because of opponents taking better care of the ball and 2 on 1's becoming 2 on 3's.
The best teams are usually outside of the top 10 in fast break points because transition offense doesn't coincide with playoff success. It usually means that the team lacks good half-court execution on offense, again, something exposed in the playoffs.
I rather the team focus on Stevens' grind-it-out defense and have set plays built around the 3 smart and above average passers on the team (Rondo, Sullinger, Olynyk). Getting the players to refine their skills/roles in the pick and pops, pick and rolls, post ups, drive and kicks, and cuts to the basket will be much more useful to the future of the team than transition offense. The Celtics probably aren't going to make the playoffs this upcoming season so this would be accustoming the players for the future.
Of course, Humphries wants to run. His 1 on 1 skills aren't good enough to get his stats back to a double-double without it (and he wants to inflate his numbers in a contract years). He's at his best getting hustle points like putbacks and, ummmm, finishing in transition.