For me, Luke disappearing is not just about accuracy. It’s about simplicity and clarity of the point we’re trying to get across. Since it’s accurate to the movie, it makes it easier to understand what is happening since we recognize what is depicted, and it would be easier to accomplish.

If people are really worried about the laughing, you could just have the Luke puppet dip below the frame and then pop back in again or something. Arguably you might not even need to have anything happen at all. Just have the puppet bounce around the frame a bit, almost tauntingly. That might actually be the best thing to do regardless.

Not to put too much of a damper on the “walker falling down” concept, but I think visually your first instinct when you see that is you would think they’re recreating TESB, which kinda defeats the purpose we’re going for.