I was poking around the movie and it looks like I’ve missed at least one other mention of Vader. This occurs during the first bit of the Rebel ground attack. The scene in question is dialogue between Tarkin’s “right hand man” and himself. The guy talks about the rebel attack on Scarif. Then Tarkin asks about Scarif and the Death Star Plans … which are confirmed … which then Tarkin directs the Death Star to go to Scarif AND inform Lord Vader. This will be a bit of a toughy since he says “and inform Lord Vader” very quickly …

I can play around with it, but the question is it ok to leave in? This is a such a short line that does not indicate that Vader will intervene as said and shown later in the film since I’ve removed Tarkin’s later line about Vader’s role on attacking the fleet as well as remove Vader’s appearance later as well.

UPDATE:

Here is a quick edit that cuts out his line after the “they are” line. https://vimeo.com/344421737

This does take away what his orders on going to Scarif, but it also makes it a “surprise” to see the Death Star later appear toward the end of the battle.