ok, my mobile request is more bizzare but I think would be a rockin tool set for in the parks... a mobile version of wdwinfo.com... that has times for shows and parks and attractions and parades and spectaculars, restaurant menus, and maps kinda like what Robo puts up on the theme parks board. this would approach putting the excel spread sheet with all your planning info out of work, as on my last major trip I used the iPhone to get at all that data, slowly cause of the interface, but had everything I needed (though it was cobbleded together from multiple wdw fan sites).
but a unified mobile site with the basic info ya need to drag around the parks would rock