I definitely think the trade signals a change in philosophy, not just because you’ve added Porzingis but, perhaps even more so, that the team seemed comfortable moving off Smart.
The basic principle under Ime was “switch everything” and they had the personnel for it. Smart was a PG who could body up centers, you had a massive Brown and Tatum at the 2 and 3 spots, and two agile big defenders.
They are going to be more of a Budenholzer-style, drop defense this year. It doesn’t necessarily mean worse; the stats suggest Porzingis was an elite pick and roll defender last year, I suspect because he was so massive at the rim. (7-3 height tends to help make up for subpar footspeed.)
The concern I have is more so on offense. When the offense was really humming last year, you had guys all over the place who could pass, dribble, playmake, cut, and shoot. Smart, for all his limitations shooting from deep, was great in that environment.
This is going to be different. I’ll wait before fully passing judgment, but I can’t imagine KP is the same type of passer as Smart. Will the ball be whipping around, with tons of movement, with him and, say, Timelord on the floor? If the ball stagnates, it won’t matter that KP can shoot. Guys just won’t be open.
The thing I’m hopeful for is late-game offensive execution when the team has a lead. So many of us were ready to tear our hair out when the Celtics went stagnant late in games. Things get tight, and when the jump shots don’t go in, that leaves you vulnerable to comebacks. (Particularly when the other team has long rebounds off of your missed 3s and then scores in transition.) KP will help there because he’s, statistically, such a good post scorer. That type of offense isn’t the most efficient, but it has low variance; KP is unlikely to go completely ice cold shooting close to the rim in crunch time. This is going to become extremely important in the playoffs, I figure, when everyone tightens up and you need a consistent source of offense.