Young Luke Skywalker

Any Obi-Wan Kenobi film must have a scene with a young Luke Skywalker.  Obi-Wan “Ben” Kenobi waited for years because he hoped Luke would become a Jedi and defeat the Empire.  The fact that Luke, in Master Yoda’s opinion, would be “too old to begin the training” highlights that Ben may not have been as confident as he seemed.  It was Ben’s previous failure at teaching another boy from Tatooine that led to the Jedi Order’s downfall.  Consequently, a scene with Ben and Luke could show his doubt at forcing the huge responsibility on the boy.