There's definitely a lot that can be said about these scenes with Luke and Vader, although your previous posts have helped remind me there's more to Return of the Jedi than "these scenes and a lot of brushed-off filler," as some disparagement may have shifted to over the years... In noticing how you treated "Vader handling Luke's lightsabre," I did get to considering how a certain emphasis in third-party stories on "Jedi building their lightsabres" finally tempted me into thinking "that doesn't have to be some universal final ritual for them."

I also remember now your looking ahead to this line. As for Vader's "You don't know the power of the Dark Side," if I can be so bold as to assume your line for next week isn't its immediate followup "I must obey my master," I can bring up how I did once happen to think Vader isn't bringing up the "join me" offer he made in The Empire Strikes Back. When J.W. Rinzler's "The Making of Return of the Jedi" started repeatedly editorializing on that being an inexplicable failing I did get annoyed; I'd already theorized Vader knows Luke's escape at the end of the previous movie closed a window of opportunity for him, and in no longer being sure he can turn his son to the Dark Side himself whatever savour he found in being evil is vanishing for him...