If we kept Tauchman and Bellinger is gone for 2025, we'd be in a situation where if anyone in the OF gets hurt longer term, we're almost certainly bringing someone up from Iowa to fill that spot. Between Caissie, Alcantara, and the somehow-mobile corpse of Brennen Davis, we're pretty well covered in OF depth. Even Triantos has experience in the OF. Canario likely disappears before 2025.
I can definitely see a couple of those other guys being dealt for pitching in the offseason, but that still leaves plenty of depth. There is also more potential depth, as well. Shaw could likely play the OF. Franklin could be another potential option late next year.
If they dropped Tauchman, it's possible they'd bring up one of those guys to play the 4th/5th OF role, but I'd think they want them getting consistent PA's in the minors instead of riding the bench most days in the bigs. If Davis stays healthy and hits well the rest of this year and next year in ST, I could see him getting the job. But how likely his he to stay healthy?
So I could definitely see them hanging on to Tauchman for that role again in 2025 unless Bellinger opts in on his contract. Then there's really no need for an additional OF on the roster.