I do hope that Palpatine’s return is written really well for people to accept his return and role in The Rise of Skywalker. As someone who generally does not like fan service, I do trust Lucasfilm with what they’ve been doing with the sequel trilogy.
I think the significance of Palpatine is greatly overstated. It’s possible that he’s just be part of a Sith artifact macguffin that’s in the Death Star wreckage.
I have to say if they’re legit bring Palpatine back to life, on the face of it that’s a pretty lame idea. I mean maybe there’s a way to execute it that works, I don’t know.
But I do like the idea of bringing back Palpatine in a non-literal/physical sense - dealing with something he left behind or something more ethereal or whatever. We’ll see I guess.