That's what happened when you turned Snoke into a nobody who died doing nothing, Hux into the sith lords' stress balls, Kylo Ren into a villain who can't be taken seriously after being publicly humiliated by a astral projection of his master, Captain Phasma into a bigger disapointement than Boba Fett and Jango Fett combined and the First Order into a bunch of emotinally unstable, incompetent brats.

Palpatine may seems like desperation, but if there is someone who can bring some dignity to those losers, it has to be him.

You can't just bring back Sidoious like that, without not even being slightly foreshadowed in any of the previous 2 films. Smells like desperation to bring back fans. Also with how Luke was pretty much ruined, why should I expect anything different from how they will do the Emperor.