The Nintendo area in Hollywood had WAY less land to work with vs. Orlando or even Osaka does. As of right now, Universal has said that Orlando will be getting the Mario Kart ride, the Yoshi ride (USH didn't have room) and the Donkey Kong coaster USJ is getting. I think the theming in the land in Hollywood is awesome but it looks VERY small.
Outside of Nintendo, the How to Train your Dragon land and the Classic Universal Monsters lands sound exciting. I heard the Universal Monsters is getting a ride with the same technology as Forbidden Journey, which is cool because that technology is really underutilized.