Odd thing is since I first saw ESB in 1980 until now I always believed that the carbon chamber was inside Cloud City and not a part of the vane structure.As it seems now that this is where it is I think that some steam would be a good idea to establish the location of the chamber and map the path of Luke and Vader's duel for the viewer.Sure would have cleared it up for me before now,lol.

I think,though,that it would need to be in keeping with the steam we see in the carbon freezing process rather than smoke.I do think it is a good idea and that is a great mock-up as always.