vaderios, judging by the angle we see of the top of the 'railing' here, I also agree that we wouldn't be able to see the bottom part of the 'vane' structure that you mocked-up, as it's 'vanishing point' would be somewhere underneath the 'walkway' from this angle. However, it was neat to see that flashing 'walkway' light 'yellowed' up in your version, compared to the current shot!

Adywan, that reminds me. I know that the lightsaber that flew out the 'round window' with Luke IS actually shown, but I still think it's a bit lost among the nearby 'debris' in the shot without your helpful arrow, which pointed it out to me in the first place, lol....

I'd still like to see it perhaps positioned nearer to Luke's right hand (where our eyes are drawn during this shot), if at all possible. No worries if not, but for years I thought that it had surely fallen down the long chasm below, and that it was yet another oversight by the makers when Luke appeared with it to face Vader again! Turned out I was wrong, but I wonder how many others thought this too, due to it not being placed in a little more obvious position?