Might be cool to have them looking over a massive fleet of Star Destroyers or something. I mean it doesn’t have to be a round planet-like object they’re looking at does it?
The only point of the scene is to stage the future events of Episode IV (and to show a montage of deaths - Padmé, Anakin, the Republic - and births - Vader, Luke, Leia, Death Star, the Empire), so there are only two ways that can make sense: you keep the movie version of the scene (with the death star being built) or you cut the scene completely.