So...I get it now. All of the old cast needed to be buried so that new stories could be created with young characters who are alive and well at the end of Star Wars: Rebels. The universe may have lost its last Jedi, but "Jedi" was just a title. It was a name given for people trained in the use of the Force that also had membership within an organization. But even Shakespeare in a universe not so far far away realized that a rose by any other name smelled just as sweet.
Surviving the end of Rebels, which had its curtain call beyond the events of Return of the Jedi are pretty much everyone. The universe has Ezra Bridger doing who knows what (the guy sailed off into hyperspace riding space whales and towing Grand Admiral Thrawn's Star Destroyer along with Grand Admiral Thrawn as his prisoner). Those stories have yet to be created. The galaxy also has Ahsoka Tano, who has incredible training, and who could potentially train Rey, who (in my opinion) is wielding power the equal of Yoda. I mean...all those rocks at the end of the Last Jedi were easily as heavy and massive as an X-Wing, and she didn't look all that strained to be throwing them around.
So what can we expect then in Episode 9 and beyond? I personally think that we're looking at Ezra Bridger and Ahsoka Tano getting cast as live action stars. I think we're going to see the fate of Grand Admiral Thrawn, and somehow he is going to be connected to the remnants of the First Order. And I think we're looking at new force powers that will resemble magic more than they do science fiction. Most people know (by now) that Jedi's were based on fantasy wizards anyway.
I'm hoping that my friend, Kevin Long, will weigh in somewhere in the comments. He's also a fan of the series and has quite a few insights that I value and that I don't pick out myself in my own viewings of the shows.
But yeah, thanks to Dave Filoni I'm excited for Star Wars again!