Yeah, I mean ideally that'd be nice be so far all the animated shows have been directly tied into the movies one way or the other. The only periods they haven't really explored is the ancient past, the distant future, the decade between TPM & AotC and anything post-Bane/pre-TPM. I'm happy to be wrong about this but I have a hard time seeing them forging totally new material with an Old Republic show or something (though a Clone Wars style anthology show in a similar mould as 'Tales of the Jedi' would be a lot of fun!)
To me, post RotJ feels more like comic book or novel territory if it's going to focus on the Skywalker clan. The major conflict is done and they're mostly off rebuilding the Republic, the Jedi, and apparently starting a racing career. Good for the kind of character focused storytelling they've been doing in those mediums to date, not so much for episodic television. Plus the Mandalorian has the "what's going on in the underworld" angle covered.