I was thinking just 2nd actually.
Mostly I think Thomson just has to stick with a line-up because that is what seemed to work for him - and the players - last year. You want your best hitters to get the most plate appearances but "best hitters" doesn't necessarily mean "hottest hitters." I think he could have kept Schwarber there all along - his OBP is already just about back to its 2022 level, which is also the same as Stott's OBP.
And Turner is still a guy with a .351 OBP (including that exact number for his 486 games as a lead-off hitter). Would giving that spot back to him challenge him to be more selective and be a vote of confidence, or keep the spiral going? Should he have lost it in the first place?
If you keep tinkering JT's always an option for either 1 or 2 as well. His bat still has to come around.
Bryce does seem to just prefer hitting third.