that would be my first guest. before anyone goes jumping off any cliffs, think about it, they have competition, what does the competition do?
unlimited express passes at US/IOA for onsite guests is exactly why we did a split trip in april and are doing a split trip next week. with fastpass return times being enforced, next gen queueing in the wings, the world being wireless-smart phone-internet, i would not at all be surprised if they offer some sort of fast pass advantage to onsite guests in lieu of EMH.
while Disney holds much more magic for us than US/IOA, it's hard to beat the unlimited express pass that they offer....i'm sure Disney notices and is working on a counter to it. Disney knows that keeping guests on property is a good thing for their bottom line so i'm willing to give the benefit of hte doubt that they have a master plan on this.