There's 26 games left to go in the season. I think at this point Brad has to start Brown and bench Morris, and go from there. Kyrie/Smart/Brown/Tatum/Horford. It's a slightly smaller lineup but I still think Morris helps us better off the bench with his scoring and Brown has looked great as of late.
Bench of Rozier, Morris, Hayward, Baynes, Theis is a great bench and I think Morris being there also adds to it honestly if we're talking going against other team's bench units.
Also, CBS needs to innovate his rotations and have at least 1 or 2 starters out there even when the 2nd unit comes in, and rotate during the game. Many times we see the bench comes in and the scoring just dries while Kyrie, Tatum and others ALL sit. Balance it out. Other teams like PHI, HOU, etc. do this too.