I think they could find the right balance for all the characters, but honestly I would rather get the further stories with Luke, Han and Leia in a film/television medium rather than just books or comics. And since Carrie isn’t with us and Harrison and Mark are older now, an animated series would be a great way to do it. Plus, since new movies and live-action shows will likely focus on new stories and characters, a show like this could be the one story that further develops the Skywalker Saga.

But you’re right, a show between ROTJ and TFA is just an assumption, but I guess people assume that because it fits the pattern of TCW and Rebels, and the way Rebels ends implies they’ll continue that post-ROTJ story. But it would make sense to focus on a new set of characters (not necessarily brand new characters), and let the main characters of the previous series be side characters, like Ahsoka and Rex were in Rebels.

Since the post-ROTJ stories about Luke, Han and Leia were such a big part of the old EU, I can see Dave wanted to explore that with a new series.

For what it is worth, this was what was set in a Making Star Wars Podcast back in July:

Jason has heard that there is a new Star Wars animated series in the works which is more central to the story than ‘Rebels’ or ‘Resistance’. Dave Filoni and Jon Favreau are behind the series but it isn’t connected to The Mandalorian. Jason knows more but doesn’t want to say at this time.

If any of that is true, hopefully we’ll find out by Celebratuon.