There's a reason that, despite being the best player on the team, IT isn't starting. Brad uses a motion offense that demands strong defenders on the floor, and for all the offensive prowess IT has under his skills he's nowhere near a great defender like Bradley or Smart are. Should he be starting? Yeah, maybe. He's talented enough to be an NBA starter, but how will that fare with Marcus Smart? He's the PG we're set to build around and to regress him to the bench at this point is gonna mess him up. Ainge sent out Rondo not only because he was utter garbage his last days here, but because he wanted Smart to take the PG duties, despite his recent struggles the kid has to learn through them. How shady will it be to send him right back to the bench because Ainge decided to bring another PG that will bump him to the bench. He's a rookie and might not care as much, but it hurts his development. Let Smart shoot the 3 and clank them, let him turn the ball over, let him make mistakes. Growing pains. IT is the perfect 6th Man and should be utilized as such. He's the scoring punch this team needs whenever they're anemic on offense.