Looks fantastic. I'll be down next Sat and Sun and I'll probably pick this up just before. I know almost everything about WDW but this will be nice to have as well.
I'm glad you passed on user submitted wait times, they've never any good. Besides, there are already some free wait time apps out there that probably have a larger (and thus more accurate) userbase. Why fragment that market any more than it already is? I hope you can find a good solution one day.
Here's a suggestion. A "How long will it take me to get from point A to point B" feature. Regarding crossing parks on foot, or going park to park via disney transit. Times would have to be approximate of course.