Jedi, Sith and lightsabers are okay, I think whole problem is with "Good vs Evil" or "Empire vs Rebels" aspect.
Prequels weren't a bad idea but they were made bad and written bad. I would rather have a remake of Prequels that are rewritten by a good writer than a new trilogy.
Clash of two ideologies, Jedi vs. Sith where both are given something good and bad would be much more interesting, and I mean an ideological clash, not a lightsaber dance.
Right now, do we even know what bad guys want? What good guys want?
As far as I know, Jedi are about Order and Sith are about Chaos, they aren't meant to be "Good vs Bad".
And I would like some actually well written political stuff. I think politics can work even in a movie for mostly kids. All these work pretty well in Clone Wars cartoon. But I mean, that cartoon even made Jar Jar Binks work to a degree...