The middle one was part of a much larger area makeover that would have included the Wonders site. Thankfully it was scrapped (small mercy I know)I've got to say, I think I like the middle one the best of the three. I like that they are keeping certain elements in the current design, but the middle one does have a more futuristic and lively feel to it. Maybe just because the mockup has more people in it? I especially like the sphere on the right and raised walkway/balcony.