Even though bringing back Palpatine makes sense of all the mysteries about Rey and Snoke? It is almost like that is what Abrams was thinking when he wrote TFA. And since Ian is still alive, how do we know that wasn’t one of Lucas’s ideas that they reused? It is the kind of move he would pull. Probably why I like it. And it is what they kept doing with Ming in Flash Gordon. It is what they keep doing with the Master in Doctor Who. He’s supposed to be dead and unable to regenerate, yet he keeps finding new ways to cheat death. I think we are up to 5 or 6 different ways at the present. So I really have no complaints about bringing back Palpatine once. It fits with the mythic origins of Star Wars.
Palpatine does NOT make sense of the mysteries around Rey and Snoke. Rey’s parent-reveal was out of left field and didn’t make sense with what TFA and TLJ seemed to be establishing.
Snoke was being puppeted by Palpatine or was he just a pawn? What if Snoke had convinced Kylo to kill Rey in TLJ? Then what? Made no sense.
Reusing the Emperor does sound like a Lucas move, and that on it’s own I don’t necessarily have a problem with. It probably would feel more “Star Wars”-like if they just reuse him, versus some green skinned alien with a pony tail as the new big bad.
However, I can see the complaints that none of the sacrifices seem to matter if the SAME guy keeps coming back. It kind of works in different genres in different mediums, but I think those particular stories lose integrity, and why stories with a definitive ending are often times superior.