I’ve thought it would be rather interesting to find lines that Palpatine shares with Snoke and kind of have them bleed into each other every once in a while, since Palpatine is a literal puppeteer for Snoke. Since he’s in such a weak state it would make sense that he can’t maintain the Snoke voice all the time.
That’s such a good idea, hearing Palpatine echo Snoke’s dialogue is pretty doable and would tie the films together seamlessly.