That would literally undermine his redemption arc, since at that point he is conflicted between the light and the dark; that’s why the scene where he chokes an officer was removed from Return of the Jedi.
I disagree, this scene would be placed in the beginning, kind of like Kylo fighting on Mustafar in TROS, which didn’t impact his redemption arc.
On the contrary this would tie his character to the previous episode and allow the audience to see him change throughout the movie, as instead to seeing him changed in comparison to the last movie.