Okay, I am coming at this as someone who reads this thread, reads news about Rebels, but has never actually watched Clone Wars or Rebels.
(and yes, I know, I know, I’m missing out on some of the best Star Wars ever. I might get around to it, but I hardly watch anything at all)
Wouldn’t it make a lot of sense for “What comes next” to be the new-canon version of the Legends Thrawn trilogy? They’ve introduced Thrawn, they’ve introduced Noghri, and only one film left in the ST makes it a perfect time to start telling post-ROTJ stories.