vaderios, while it's always neat to see whatever excellent mock-ups you come up with, I'm not sure about your perspectives here, and have several reasons why I think this particular building is just fine anyway without needing the extra work of an overhaul done to it. I wish I had the time to explain why just now, but you know I'll get back to you on this when I can. (with screenshots I now need to organise....)
Your penchant for 'lighting' issues of all kinds are well known and some of your alternative takes can be a marvel to behold, and I've a couple of thoughts to do with that aspect too. However, you've made me notice something subtle that's missing that I would like to see added if possible, which I'll cover as well when I get the chance. :)
Adywan, that latest tweak involving your 'Falcon approaching Bespin' preview makes that awesome shot even better now. And neat to see those work-in-progress shots of your backpack moulds. I'm assuming that Rogue Leader's footage will be mainly fairly 'distant' shots of extras, and that the majority of the various prop details will probably be mostly un-noticeable anyway. Nice to know that things are turning out to be a close approximation of the original props, even though.
Rogue Leader, good to know that you have an alternative in mind if there's no snow nearby to film in, by the time you're ready. I guess even a reasonably lit, big ol' white building/studio space interior somewhere could be fine for filming against, for Adywan to matte whatever 'long shots' of the extras he's using? Fingers crossed for actual snow though.