I think this is a great opportunity to reboot Star Wars without actually rebooting it.
For Star Trek, JJ had to create a plausible situation to start fresh. For Star Wars, all the Jedi are dead or a few are in hiding. Luke has to start over and rebuild the Jedi and they can set their style and everything from scratch. New saber colours, new saber weapons (daggers, tri-bo, etc), new outfit styles, etc.
I'm hoping they do a Dark Council where some fresh Sith look at the past and say "well, the 2-rule didn't work out too well, so let's have 3 Sith leaders and 9 more for a Dark Council, and then a bunch of noobs and have an all-out Sith army".
They can basically do whatever they want without having to come up with anything crazy or a total reboot.