I believe a cartoon set in-between OT movies is a better move than a post RotJ one. TCW fleshes out the period very nicely, yet we have virtually nothing between 4-5-6 despite those being the most well regarded movies.
Honestly, that’s kind of why I don’t want them to do that. The original trilogy is great, and a series set between them focusing on the Rebels during that time period could be a great show, but 1, Star Wars Rebels already exists, and 2, people are already still annoyed at Disney for de-canonizing the old EU so just imagine the outrage a series set between the original series would cause, especially if it isn’t good. I’d much rather them do something like that for the sequels and set it between episodes 8 and 9. The Clone Wars already went a long way towards redeeming the prequels for lots of people, even though the quality of the movies didn’t actually change people’s perceptions of them did, so I’d much rather them put the energy towards doing that for the sequels and trying to mend something that actually needs fixing, instead of adding things in between movies that don’t need them. I’d definitely be interested in them finding some way to appeal to original trilogy fans but I’m 100% certain in the inevitability that if they try everyone’s just going to hate it because even if I do like, or at least tolerate, a lot of the recent Star Wars Disney+ offerings I have 0 faith in Disney to do something like that for the original trilogy and have it be any good.