Something to consider: simply inserting a pass first point guard of let’s say Chris Paul’s caliber may not provide the expected results. There is a good chance that Tatum cannot produce at his current level in that system.
Agreed. Tatum's game does not gel that easily with others. He will have issues playing next to other stars. With lesser stars, maintaining team identity. With greater stars, moving into a secondary role and falling production.
I like Horford as an example. He is a great connector. He makes connections to everyone around him on both ends of the court (passing, screens, cuts, rebounds, defensive rotations, communication, rim protection, rebounding). He brings people together and makes them a unit. He is very good at that. Smart is pretty good at that too.
Neither Jaylen or Tatum are currently good at that. They are more self-generators. For how much they have the ball in their hands, for how many shots they take ... they do not create connections offensively with teammates.