Carthage said:
The Sith are a core part of Star wars at this point
(in an Obi-Wan voice) That's what the prequels told you.
Carthage said:
I would hope they or at least some Dark side element would be apart of the film. Maybe an undiscovered Sith sect, or something unconnected with the Banite line or an Empire in general.
Or better yet, a dark side organization with no connection to the Sith.