[discostu]

Much like any number of surviving Sith, but as all the Jedi and Sith that aren’t Palpatine and Vader are in hiding they don’t really count. And even though Vader and Palp are running the Empire they really aren’t all that Sithie about it, they never seem to be questing after anything or sacking temples, just the occasional force choke or lightning bolts.

[Snickering Hound]

Much like any number of surviving Sith, but as all the Jedi and Sith that aren’t Palpatine and Vader are in hiding they don’t really count. And even though Vader and Palp are running the Empire they really aren’t all that Sithie about it, they never seem to be questing after anything or sacking temples, just the occasional force choke or lightning bolts.

There are only allowed to be 2 Sith.

Star Wars Rebels got around this be creating 'Inquisitors', dark force users working for Vader and the Emperor.

Then there was Darth Maul who even though chopped in half and fell in a shaft at the end of Episode 1, came back in the Clone Wars and Rebels...but not as a Darth.

And now that Disney is making money by the mintload through these movies, you can be sure that there will be movies starring surviving Jedi.