I can tell you from first hand experience that the outer ring is very effective. We were at the Halloween Party on Friday night and there were a ton of people in the hub for the Hocus Pocus show, castle projection and fireworks (which were excellent!). We navigated from Tomorrowland into the Hub for the shows, and the outer ring was not crowded, whereas the hub was packed. Once all of the new plantings have time to really germinate for a few years, this hub will be beautiful. It is tough for me to really capture it in pictures, but when you are there, taking it all in, you really see how they did a great job. When I first went in 2009, the hub really did feel like a hot concrete box. It just doesn't feel that way anymore. The gardens with the fountains help with that, and there are definitely trees there now. Especially since they removed the temporary green towers that were used for the castle show and replaced them with more trees it is really nice. The center is still open, but I see why they have it designed that way. When you traverse the outer ring areas, it is beautiful.