Bringing Back the Emperor is an awful idea
It just proves that Disney, Kennedy and Abrams do not understand Star Wars. I forget which actor or crew memeber said something like "they'll defeat the emperor properly this time" (Probably Daisey Ridely, she is prone to saying dumb things). Could they say anything more insulting to the Original Trilogy or undermine the sacrifice of Vader saving his son, or the emperor's hubris leading to his demise. Oh no, that useless Luke and Vader just couldn't get the job done right. Almighty Rey comes in to save the day again.
From what I hear of the plot leaks she has to sacrifice herself at the end to save Kylo (now Ben again, stop the Emperor and free the Galaxy. Yeah if that is true she is even more of a Mary Sue then the original satire. I swear to god they better not end it with her sacrificing herself to stop the emperor, thus stealing Vader's thunder like she did Han and Luke's already.
I know they have done the emperor's return in some of the EU stuff, but I always thought it was stupid to do so, bringing back the emperor at any point completely undermines the end of Vader and the Return of the Jedi.
Disney doing it now is obviously a ploy to capture nostalgia again because they are desperate to get back the love and money they got for TFA and are panicking over the response to Last Jedi and Solo. So they are doing the "'member when Star Wars..." gimmick.
Such a waste of a trilogy. I am glad I have yet to pay for a single one of the disney era films