Ok.. Some observations... I'm loving the overall feel of it so far. It's minimal, but at the same time, expanded... Yes, the nice organic touches are pretty much gone, but I think there's a purpose here... This is about removing traces of Amy and Rory.. Exercising demons if you will... No clue if this is what SM had in mind, but the Doctor is going back to what he's familiar with in the past, just like we throw on an old familiar sweater because it comforts us...
I don't give a lick about the glass floor being gone.. It was nice for some cool shots from below, but really, it's just a floor... The size hasn't really changed that much.. It's still an upper platform, so who knows what the ground floor looks like now.
Regarding the clothes, I'm thinking that just for the Christmas episode, befitting the time period he's in...
Looking forward to seeing her in action, to be sure..