I think the ideas in this thread are brilliant, but I really don’t think the audio broadcast at the end of TLJ works. It’s too cartoony and forced to have Palpatine speak through a random radio at the very climax of two important characters interactions.

I disagree, the way I interpret it is Palpatine has sensed Luke has died and decided to come out of hiding. He would be keeping track of Kylo through the force and is able to communicate to him through the radio. Also, considering all the other “cartoony” moments we get in the ST movies I think most ppl watching this scene would find it acceptable as a subtle way of teasing Palpatines return.