@BeddieKU23
Great post. I think you hit on all off the issues with this team so far.
I will start with the good and go in reverse of how you went.
Braun (along with Agbaji) was very good scoring from the perimeter. Having both of those guys emerge as legitimate threats to score 15+ every night will make KU very hard to guard because you cannot leave either from three, which opens up so many passing and cutting lanes everywhere else. Over time, this will open up the lane for Martin, Yesufu (we'll get to both of them in a second) and others. If Wilson rediscovers his stroke, that's potentially five guys at crunch time that can handle, shoot, or drive.
Part of the good shooting is having good shooters. Part of it is having space to operate. This team should never have more than one big man on the floor at a time. McCormack will be better than he has been. He is at his best either at the top of the key shooting his face up jumper, rolling to the rim for a lob, or getting his offense off rebounds and stick backs. Those are the ways Big Dave should score. Force feeding him in the post is sub optimal, especially when he can punish defenses that help to shooters and drives with dunks and putbacks.
Because KU needs to play small to maximize their personnel, they are going to need guards that rebound. Martin is very good as a rebounder (constantly working back to get boards), and Braun plays bigger than he is on the glass. Agbaji should rebound more, and I would actually challenge him to either rebound at a higher rate, or take on key defensive assignments. But this team has to play small. Wilson is most effective facing up bigger players, where his quickness can exploit that mismatch. When he moves to the perimeter as a wing, his quickness advantage is negated and his productivity drops. I would like to see KU run some 1-4 to 4-5 PnR action. Basically, Wilson screening for the PG (preferably with a PG that can shoot), then if Wilson catches on the pick and pop, immediately getting a screen from the 5. Since KU is going to have shooters on the floor all the time, that double PnR action could catch a team in slow rotations, which should open up either a lob or a three.
This team might be able to be average defensively, but they can't do that if they switch everything up top. They have a few guys (Harris, Yesufu, Agbaji sometimes, Braun at times) that can get after it defensively. McCormack and Lightfoot are solid around the rim. But they have to be able to keep their assignments rather than switching on every action because size and quickness disadvantages can be exploited if they know switches are coming. That's a tactical adjustment that should be made in conference play.
And finally, how to close games. The Dayton loss can be blamed on a bad closing strategy. First, KU may have had the wrong group on the floor. Second, they may have had the ball in the wrong guys hands.
The two best one on one scorers on this team are Martin and Agbaji, so if you're running a play at the end of the game, the ball needs to be in Martin's hands to start, and it probably should get to Agbaji eventually. The ball should not go into the post, because that is not KU's most efficient offense. Dave McCormack is not Wayne Simien, or either Morris Twin, or Perry Ellis, or Darrell Arthur. Those guys were more or less automatic one on one in the post. Because McCormack isn't automatic, asking him to make that play in that situation is unfair. He has skills that mean he can be a factor on that play if you have a PnR going that gives him a roll option, or even a pick and pop where he could also be a passer since Dave is adept at finding open teammates. But asking him to score in a back to the basket situation there, when that isn't his strongest suit, is unfair to him. Let him make a play he excels at.
But the other option is to close games with either Martin-Agbaji-Braun-Wilson-McCormack or Martin-Yesufu-Agbaji-Braun-Wilson. I'm not sure which of those lineups I prefer more, but Yesufu is another ballhandler/scorer that can make things happen. Having five guys like that down the stretch is intriguing. Obviously, the group with Yesufu is super small, but if they don't get killed on the glass, it will be difficult to turn them over and they should shoot it well. I'd lean more towards the lineup with McCormack now, surrounded by four shooters. If McCormack is a screener with any of those guys, he is well positioned to play his best ball as a lob catching rim runner that can crash the glass hard.
But it's still very early, so these things have a way of working themselves out.