This just in from the messy desk of R. Pupkin:
Among the ideas that the Imagineers are allegedly looking into is one where a guest could book an attraction up to a year in advance. This would appeal to the visitor who needs to plan every minute of their Disney trip (such as meals, shows, and bathroom breaks).
Another idea is one that involves a second version of an attraction which would be designated FastPass. All of the popular attractions would have a double that would be for FastPass holders only. For example there would be your standard Haunted Mansion and then a FastPass Haunted Mansion right next to it.
A third idea is one in which the visitor never actually gets on an attraction, they just write books about it.