If that can be executed effectively, I agree it’d be an improvement. It could also imply the dagger is what opened the door adjacent to the throne room, rather than… Rey’s Palpatine DNA or something. (I doubt there’d be any real way to make that moment any clearer with footage of the dagger.) That’d be good anyway, but especially welcome in a Rey Nobody edit.

Unrelated: Since we have clips of both traditional blue and yellow lightning destroying the transport thought to contain Chewie, it’s possible to use either for each of Rey Palpatine and Rey Nobody variations of this project. Yellow adds some distance from Palpatine, and blue is just what we expect Force lightning to look like when anyone uses it (only seen by Palpatine and Dooku). In Legends canon (for neeeeeerds!) there is a precedent for light side Force lightning that is yellow. In the context of a Rey Nobody TROS edit, yellow can represent the darkness she fears within herself, and speak to a sense of balance when she uses a yellow blade she constructs. (A Rey Nobody version also wouldn’t have that little crackle between Palpatine’s hands as he speaks with Kylo, which is there to tie into Rey’s lightning moment.)

So, in a Rey Palpatine edit, shall the yellow lightning stay or be replaced with the normal blue? I think the hand crackle would stay in this version, as it has a purpose. Though it could be removed without causing an issue, perhaps not making it more obvious than it already is.