This post is more about our lineup structure than John Martin Collins III himself.
In general, I really like our 5-out lineup. It really gives us the stepping stones on how to be a lethal force on the offensive end. The problem is, we don't have enough quality players to close out games. In the closing minutes, Will wants to maximize shot creation at the expense of defense and, unfortunately, he has really succeeded in that. From the beginning of January, our defensive rating in the 4th quarters has been abysmal 135.6 when Clarkson, Lauri, Sexton and Collins have shared the floor. I also can't imagine that Will would be happy with how we move the ball with that lineup.
So how to fix this problem? We don't have perfect pieces and it's really tough to close out games without players who can create shots for themselves. I believe that replacing Collins with Kessler is a wild card that Will only uses against suitable opponents. The alternative is to improve defense and ball movement but sacrifice shot creation. Until Keyonte grows into this role (maybe never), our starting lineup Dunn-Sexton-Tech-Lauri-Collins is an obvious choice. Another option is to throw Sexton into the deep end as the only one who can handle the rock and replace Dunn with Ochai. Unfortunately, Ochai's development has been at a standstill, and he has absolutely no confidence left.
I.e. I'm stating the obvious: we lack players who can defend, handle the ball, shoot and are not ball stoppers. If Clarkson is traded, there will be growing pains, but in the long run the change will be for the better.