A lot of atmosphere about that concept art just screms the emotion of the Fantasyland Expansion to me. Where everything was familiar but cheaply as possible added over. Many things in that look fun, but not immersion. Just new elements over the familiar and taking away a lot of what was great about those areas in the first place.
I am glad the change that happened did, and this is coming from someone who really loved the way Dueling Dragons was before as well as the Enchanted Oak, ceiling and all.