I really like your idea about different cells of the Rebellion, perhaps the cell we see in your edit could be the infamous “Outer Rim Allies” from TLJ? I also agree that a few more ships in the fleet shots wouldn’t hurt.

But I think The Executor crashing into Endor seems a bit odd. The Rebels destroy the Empire’s largest ship…so that it can kill their friends when it crashes? I dunno, that just seems kind of off. That being said, every other idea you’ve suggested has been fantastic, and I’m really excited to see the full film.