The Celtics are, without a shadow of a doubt, in fantastic shape moving forward regardless. However, I still do wonder if this is the ideal roster construction, even with all the second half success. In particular, I wonder about Jaylen Brown's fit on this roster on the offensive side of the ball. He really sucks the life out of the flow the Celtics want to achieve, and I don't think he's a consistent enough scorer to justify the deviation from the goal, especially when you factor in the turnovers.
Jaylen has great value in terms of his contract and reputation around the league, and I think I'd look to take advantage of it if there's a fit. What if you could replace him on the roster with, say, LaMelo? I like that roster contruction better, particularly once you find a quality, defense-first ball mover for Brown's spot. It's not something to force, clearly the Celtics are extremely competitive with Brown and capable of winning a championship, but I would still look to improve the roster and I wouldn't be afraid of breaking it up if the return/fit was right.