This is where you get into the gray area. Part of the reason why I wouldn't consider Kessler and Sexton is because they are so inflexible. If you consider them too heavily in your team building, you have to ask the question..."who can we even get?". Like for Sexton, I think it would be extremely difficult to have a strong enough defense unless his partner in the back court is a great defender, who guards both positions, and also can play with and without the ball. If we can't even take a flier on someone because they don't fit the description, it will be hard to acquire anyone. In theory, a THT who matured his game is pretty similar to Dunn (or a similar type). Really, the THT problem is an issue with his ability and not his fit with Sexton. I would argue the same thing for Collins. The reason why Collins was in the dumps was because of his early season play with and without Kessler. In hindsight, I also think it was just silly to acquire Collins if we were planning on being the least PnR heavy team in the league.
I believe in putting players in the position to succeed, but I also feel like we're not even close to a position where we should be very picky about who we put around Sexton and Kessler. If those were Mitchell and Gobert level, who could lead us to 50 wins and a high level offense+defense just by being on the team it would be one thing. I could not shut up about trying to put a better fitting roster around those two, and it's because I believed they were that good. Sexton and Kessler are good players, but not close to that level. I put Sexton and Kessler in some consideration, but I'm much more concerned about the overall talent of the squad and making as many positive asset moves as possible. If you think playing with Sexton or Kessler will cause a positive move to become negative (let's just say you believe that's the deal with Collins), I think it's fine to shy away from that kind of move. But I'm certainly not limiting moves to ensure that it works perfectly with Sexton and Kessler as core pieces of that lineup.
Like I saw a lot of people saying we should trade for this or that player because of his fit with Sexton. And maybe in our endgame state, that fit is not ideal. But I feel like we're getting ahead of ourselves and we're too far away from having a great team to be too picky about acquiring talent.