I fucking hate dumb arguments like yours that try to downplay how shit the writing for the villains were in the ST.
In the context of the OT, you didn't need to know much about Palpatine because the movies got right to the point about how powerful he is:
-You know that he orders around Tarkin and Vader, and you know that he has to be powerful because Tarkin and Vader are feared not only by the Rebellion but also by their own men.
-You know how powerful he is by the fact that he was about to kill Luke, and it is only through Vader sacrificing his own life that the Emperor is defeated.
-Is surrounded by shithouse villains that act like they belong in Spaceballs. Kylo Ren's temper tantrums make him look less effective than Vader, and so does Rey beating him twice over the course of two films.
-Somehow came to power while Luke, Leia, and Han were still around.
-Is easily killed by Kylo.
All that shit does is raise even more questions than the Emperor did in the OT.