I would like to see Starkiller and Juno help start the rebels and show them planets like Tatoonie. Maybe he goes to tatoonie to find a jedi that yoda tells him about. Maybe they can actually have a story in dagobah fighting dagobah creatures and him fighting vader and emperor in the cave or seeing the future.
We need to see Dantoniee. We know leia mentions it in episode iv to trick tarkin and vader. Maybe that is where the rebel base is in TFU III. I would like to see Endor, Yavin 4, Hoth, and Alderran included.
"You Rebel Scum"
"Wipe them out, all of them"