For my list, I'd switch those two and then change "Palpatine" to....I can't even decide. I was going to say that there are some things some authors do which I don't like, just because what we think is cool is different, but part of the reason I like star wars is because there is a diversity of genre in its creation. There are concepts made for 70's kids, 80's kids, 90's kids, 2000's kids, noir, space opera, adventure sci-fi, so on.
So first, let me just get this out: The Force, as great of a concept as it is, is just too powerful to make sense in a story like this. It makes sense in comic books, anime, or maybe even novels, but characters this powerful just don't make sense in movies and TV. And novels/comics/video games made for the universe also make just as little sense. Because according to the internal logic of the universe, the Force is just that powerful.
If the Force really gives characters the kind of power it gives them, then they should be able to walk casually through any obstacle which regular humans would think of as impossible, because we're not used to these kinds of powers. Which is what makes story-telling that much harder. You can't think of a proper physical obstacle.
Vader should have been able to get Luke, like 5 times in "A New Hope" alone, and 10 more during the Empire Strikes Back. The rebels would have no chance against him. And Sidious could have killed every Ewok in existence in an instant if he'd wanted to, but plot induced stupidity stopped that.
And then comes the matter of the disparity between a force user and a non-force user. It's like the disparity between Superman and humans. It's too great for the world George Lucas wanted to create to make sense. If the Force users are SO much more powerful than regular people, then the world we've been shown would not function.
So for plot reasons, Force users have to be weak enough to be taken down by a well-organized, and relatively smart group of non-force sensitives. Although really, if you had the Force, you could take down armies with military tanks and aircrafts without too much effort. Gevious I guess has the excuse that he was built to fight Jedi and even Mace Windu's force crush couldn't kill him, but other than things specifically made to fight Force users, there's no way a non-force sensitive is ever stepping up to a force-sensitive.
And the worst part is, there are parts of star wars which acknowledge this. There's the "no one can kill a Jedi" line by Anakin, there's those freaks from Dark Empire who were surprised when Luke easily evaded their attacks, and there's tons more indication that Force sensitives are just THAT much superior.
Well, now that that's out of the way, what's your reason for hating my favorite villain in star wars?