I have a feeling that the lava planet was added later and the original idea was that Vader was on a Stardestroyer. I don’t have much to base that on, so I could very well be wrong.
It would have been nice if he was on his big Destroyer from ESB. I know some would complain that it would ruin that ships reveal in ESB, but I see this film as a bonus story to the OT, not something to watch before it.
That’s fine, but it is still a scene that was shot with finished effects. That’s the point of the bonus footage scenes on releases. One of the ways it WOULDN’T have been is if Vader and Krennic had been having this encounter in front of Tarkin.
If they don’t want to have deleted/alternate scenes, that is disappointing but is ultimately their choice. I just have a heard time believing that what we saw in the film were the only scenes shot. Like, for example, the changing hairstyles of Saw Guerrera.