First, can we agree these aren't plays but just actions taken on the court. You may as well say you want these plays coached out of the Celtics
1. The Grant Williams moving pick
2. The Jaylen Brown defensive brain farts
These aren't plays, just actions.
Second, I have no problem with any of these.
Smart is trying to develop an in the paint, going to the basket shot. He has to try it in game, besides just developing it in practice. Smart is still young and I think he is going to be a Celtic for a very long time. Let him try develop some shots. Hopefully it pays off.
Jayson's dribble drive isos have gotten better and better as the season progresses. His handle is tightening up some and he is finishing world's better than he was. Notice also, if he can't drive, he has gotten rid of the step inside the three point line, outside 2 point 22' shot and developed a side step three pointer instead. Let him keep doing this because, at some point, he is going to start seeing his teammates open up and he will start racking up assists.
Kanter has used the under the basket reverse layup to great effect for much of the season. He might have gotten it blocked or missed it a couple times recently, but don't let recency bias fool you. Kanter goes under and wards off shot blockers behind him by using the basket as a shield for the reverse layup very well overall. For a guy without great hops, you need that move in your arsenal.
Semi's three point shot is quite acceptable as a bench defensive specialist. 35% for the year. Slumping recently, or coming back to the mean, but for two months he was at nearly 40%. 35% is average for this league. I mean, Smart shoots at 35% as well, and he takes 6 3s a game. Semi is only taking 1 or 2 a game and keeps defenses honest because he can hit those threes at an at least average rate.