It doesn’t fit the timeline, but I’d love for Maul’s hatred of the Sith and his need for revenge lead him to the discovery that Vader has a son. He tracks him down to take him as an apprentice only to run into Obi Wan one final time. Intercut Kenobi dealing with the Hutts, Maul learning Vader=Skywalker and heading to the homestead to gain any knowledge he can about his enemies past. Maul stumbles upon seeing Kenobi arguing with Lars about being involved in Luke’s life, etc.

That could be the Obi-Wan spinoff.