You could show Luke at the funeral pyre, then cut to Ben and Yoda watching him as Anakin fades into being. Ben and Anakin smile at each other, then turn and watch Luke as Luke watches his father's body burning. The Force Theme swells, the camera pans up to the sky, and the saga ends.

The biggest difference here is Luke doesn't see them, but they see Luke.

And I'm all for cutting Luke/Obi-Wan's earlier conversation, especially since Luke is no longer Leia's sister. It now serves no purpose, really.