I’ve kept the Dagobah scene, and just cut out the bit about Leia.

I don’t see why Luke would sense Vader when he’s already dead.

Moving the funeral pyre to the end is a good idea. I’ve heard the idea before (and for TPM) but was always indifferent to it. In this case, however, since the movie wouldn’t be ending with the celebration anyway, it might as well end with this.

As for Kylo, I have taken him into account, and came to the conclusion that he can just be a Vader fanboy without being his descendant. Sure, it might weaken his character a bit, but not by much. He’s still Han and Leia’s son, so there’s that.