Axlanian, nice job with that Palpatine voice thingy! It’s subtle enough that it’s not too distracting, but you can hear it very clearly if you’re paying attention.
I know originally the suggestion was that the audio would be included with the shot of the Imperial shuttle going through hyperspace, but I think it would also be fitting to show a shot of the Falcon in hyperspace as if it is transmitting the message as it flies around the galaxy, and/or maybe back-to-back establishing shots of random planets, to imply these are some of the places that are receiving the message. It could be a good way to set up planets like Coruscant, Bespin and Naboo revolting at the end of the movie, because they got the message from Lando earlier.
I really like this idea. I’ve been (quietly) opposed to having a shot of Kylo rushing off to Exegol, just because dramatically, I think it works better if he suddenly appears when all hope seems lost; and I wouldn’t want to undermine that by the film telegraphing “Hang on, Rey! Ben is on his way! *heroic trumpet fanfare*” Focusing it on the Falcon makes more sense in my mind. You could even maybe work it into Poe’s little “mission prep” montage as the Resistance is gearing up, a bit after Lando and Chewie enter the Falcon. “This is our last stand, for the galaxy… [We need your help. The rally point coordinates are transmitting…] For Leia…” Blah blah blah.