Fifth brother and seventh sister don’t exactly represent the best of Rebels - they were mostly just fill-in villains for Vader. But maybe the show can make Fifth brother a more interesting villain.

I’m also interested by the rumour that a young Leia will be a focus of the show. I’ve been worried about why Obi-wan would leave Tatooine and risk leading the Empire back to Luke, but if Leia is threatened somehow it’s a very good reason for him to do that. In Rogue One and ANH, Bail also knows that Obi-wan IS available to be called upon in times of desperate need, so it would line up. I’m happy about this.