Rebels die protecting Luke
Ezra's twin Suns comment seems likely to mean Tattooine. I think this sets up a scenario whereby we tie into the original trilogy and explain why none of these characters appear in the movies.
Maul likely goes to Tattooine for vengeance against Kenobi, perhaps he discovers about Luke and plans to inform the Empire. This does not need to be Maul but it seems most logical that he be the character to take this role.
The rebels perhaps arrive to find an injured ObiWan who tells them the secret Maul knows. The series ends with them in a scenario where they have to stop Maul passing that knowledge on. Unfortunately the only way for them to do it and save the last hope of the Jedi is self-sacrifice.
Cut to young Luke on the surface of Tattooine watching a battle up in space and a huge explosion, unaware of its significance to him. Ain't Beru calls and he grumpily gets up kicks a rock in silly temper at his humdrum life and runs to his house, silhouetted by the twin suns.