I would like to see all the parks on the app but for what it is, it does the job. I like that only people that are in the park (checked by GPS) can update wait times so the numbers do not get corrupted. Also the color-coding for priorities on rides is nice. If enough people used the app, would be a great way to get updated wait times wherever you are in the park. A "Last Updated" time stamp would be great so you are not heading to a ride with 3 hour old info.
LiquidFigment about Walt Disney World Magic Kingdom Mini Guide, v2.1