5 by 5 said:

The benefit is to add to the illusion that Vader is on a huge starship. Otherwise it looks like they're trying to get by "on the cheap" repeating the use of some other sets.

I certainly understand the intention 5 by 5, but I don't happen to see that shot as a cheap 're-using' of the other sets in any way. Rather, if Vader's quarters are deemed to be just around that right corner which isn't too far from the Bridge, then the wall section seen outside the open doorway does indeed match the existing set wall that is seen opposite the spot where Vader is seen to turn and go downwards after he chokes Needa.

If Adywan wants to change it in any way to make it seem as if Vader has travelled further, then that can certainly work too, since we only got a glimpse of Vader beginning to go downwards after he chokes Needa, and didn't get to see the doorway of his quarters there. On the other hand, in the scene when Vader first turns the corner to go and contact the Emperor before the 5-6 second cut to the Executor exiting the asteroids....when we cut back to his quarters, it would seem like a 'jump forward in time' to allow him to get there....

Going back to the additional TIE laserbolts thing, I seem to recall Ady commenting that he thought they ended up making the sequence look 'too busy' at this point. I personally thought they worked really great (along with their sound effects) where they'd been placed, but the original sequence is looking terrific regardless.