Well in the movie we have no indication the red troopers are different than regular troops. At one point I thought it would be interesting if you implied they were clones bred on Exegol.

And I had considered that as well. My initial notes had Finn basically telling the troops to abandon ship instead of “fighting back”, and then Finn says that “Stormtroopers are surrending”, implying that troopers were taking escape pods and being picked up by the Resistance. So, at the very least, Finn’s trying to save stormtroopers rather than kill them. So something like that could work, but you don’t get any of that imagery of the troopers rising up.

Regardless, I do think the change to the Finn and Jannah scene does a lot for Finn’s story already, even if we did nothing else.