Yeah, I did think of how it would explain the logic but I feel it’ll be a subtle introduction to Ben’s healing powers, and the scene to come. Kylo had no reason to fix Vaders helmet because it was a reminder of his battle and cremation.
I’m going with “ultimate power” red lightning following the line “look what you have made…” Palpatine never had the ability to use red lightning before but now he’s drawn power from the dyad it’s made him even more powerful. I also feel we need to give Palpatine something different, something that takes 2 sabers, 4 force ghosts and Rey to defeat. We’ve already seen Palpatine beaten with the powers he possessed in ESB for I feel these changes gives everything more gravitas.
Good point about the lightning - I’m definitely interested to see how it looks! Plus, red = Sith in Star Wars, so red lightning has to be Super-Duper Sith-y, right?
I’m still not quite convinced about the crystal though. Force Healing was explicitly described as “Giving your life force to someone else,” so if Ben uses it to fix the crystal, that implies that the crystals themselves are alive. (Maybe that’s in Legends, but it was never implied in the main films.) And why wouldn’t Rey - Force Healer extraordinaire - just fix the crystal then? I just feel like it will open up more questions than answers, and it won’t lead as effectively to the sabers shorting out after the fight (assuming that effect is still on the list as well).