So, here are my thaughts after watching the complete first act.
The general structure works just fine and has a good flow to it. Also, the dialogue change from Corellia to Seatos had me baffled. I knew it was coming, but it sounded so clean that I didn’t notice the change.
The only piece that really stood out to me was Shin’s sudden appearance on Lothal. But I suppose you cut her send-off to Lothal because you eliminated the droid battle at the temple. Speaking of which, I liked that you dropped the fight, but maybe you could add Ahsoka’s attempt to contact Huyang back in. The cut to the cockpit felt a little quick.
Other than that, I would suggest reworking the “end”. The scene with Sabine’s hologram feels redundant. I think it would be better if we had her suit up and join Ahsoka at the painting. This way you wouldn’t need to mention the Corellia mission as an excuse for the hologram.
I imagine a scene order like this could work.
-Dissection of the droid’s brain; cut right after the mention of Seatos
-Space Stonehenge
-Huyang and Sabine chat in the med bay followed by her gear up
-The arrival of the energy core
-Sabine joins Ahsoka at the painting
Alternatively, I would consider cutting both the med bay chat and the arrival of the energy core and revert back to a version of the “Brain surgeon” scene that has Hera cheer up Sabine. The arrival of the energy core scene simply does not add anything and you would save the reveal of the ship until the heroes discover it themself.