I don’t know. I guess my problem with removing it is just that it’s a cool scene that’s usually just removed for the sake of trying to preserve the reveal that Vader is Anakin, rather than to actually make ROTS better on its own, but it never really works anyways, since Ben’s dialogue in ANH makes it painfully obvious.

I do see what you’re saying about the ambiguous endings though. It is pretty much the only episodic film that ends in a really obvious shoehorned set up for the next film. Maybe one could leave it so it seems as though Anakin dies, then later (after the twins are born or something) cut back to the Emperor’s ship landing on Mustafar and that close up shot of his robotic hand crawling out of the lava. I think that could be a cool way of alluding to the future without being so ham-fisted with the “birth of vader”.