Adywan - about this 'Moons' thing...
Do you reckon that we should see any of them in any of the other Hoth planet shots shown in the above posts? It might be a very nice subtle addition.
I don't know what 'Sector' Luke escapes from here, but would these Moons be visible in the other views of the planet that we also see during the 'Stardestroyer blockade'?
(Having said that, you might be removing them from this shot for all I know!)
By the way, that recent AT-AT post shouldn't take too long to read, as it's just got a lot of example shots throughout. I think there's one or two relevant things in it though.