When lando alerts his people to evacuate we see the same place as leia next shoots the troopers. Thats already known.
Now, i want to make mock-up to change this. my idea is to take some background elements and colors from the scene (after han is tortured and vader boba and lando walks to an similar hall with red brown colors.) I think it will be good looking to the evacuate scene.
More to come later.
-Angel