If nothing else I guess this means they are bringing the Sith back. Another one of Disney's traits is inconsistency. First they are like we are moving away from the Jedi and the Sith and let the past die. Now they are supposedly bringing back Sheev Palpatine.
Even though I am a fan of the Sith, I am rather apprehensive about them bringing Palpatine and the Sith back. I mean look at what they did to Han, Luke, and Leia. Not to mention the new characters. All of the villains is a laughing stock. Everyone is losing their minds about Rey beating Kylo that no one realized that Finn, the non force sensitive janitor, nearly beat Kylo by himself. Hux is just a slapstick for lame comic relief and Snoke was killed by the weakling Kylo.
I really don't see them bringing in a super powerful dark side force user who will actually do anything significant. It's just another hype that will get roughly five minutes of screen time and does nothing.