You'd have to think another Ani/Obi duel will take place on the ship Obi-Wan is currently on. He fights Vader while Ice Cube and others fix the hyperdrive, or they have escape pods or a secondary ship to GTFO.
A hallway duel would seem to really favor Vader, so curious how Obi-Wan stops him, because he's got to immobilize him somehow or trap him somewhere to get everyone away. I think they'll take the tangent from Obi-Wan's line telling Reva - there are children there, are you going to let him do it again? Obi-Wan can't go back to Order 66, but he stop it from happening on a smaller scale with all those Force sensitive kids on that ship.
I'd guess Leia factors into this somehow. GIve them a touch of history before ANH
Reva feels like a free agent now. If she's going to Tatooine to try to take Luke, she might be trying to either regain her spot in the inquisitors, or maybe even go over Vader's head to the Big Cheese himself, saying look who I found.
Then the real trick is how does Luke not see Ben fighting with a lightsaber if he fights Reva at the homestead? That alone suggests that she either doesn't make it there or she decides to leave Luke alone based on her own experience with Vader / Inquistors growing up.
Go ahead and call the shot that when Obi-Wan returns triumphant to Tatooine, Qui-Gon Ghost Form is waiting for him.
One more carrot, what if they show all the kids/families from the Path getting to wherever they're going, and one of the travelers sets a bag down, and Baby Yoda hops out?
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