By the way, if you wanted to go that route with Palpatine I would recommend the line “Your coming together will be your undoing” from one of the TROS trailers.
But then the problem becomes this: why wasn’t his original plan just to have Kylo bring Rey to him? Surely he would realize the potential exploits of a dyad. Your changes suggest he is aware they are a dyad… only to discover they are a SUPER dyad. Not sure I like that tbh.