As someone who’s been pretty against the whole “multiple voices” thing for Palpatine, you’ve certainly made me a believer with this newest clip!
As for the Lando line, you did good audio work on it. However, I think it sounds a little too “real world” if that makes sense. I think if you made it sound more like a hologram using the sound effects Rogue Leader, it would sound more like it belongs in universe.