One of the videos showed some serious lag between switching settings, is this true?
How easy will it be to upgrade the unit later?
If you look at the fender guitar that is coming out on several gaming systems for rock band 3 you see that the controller is a regular guitar that is able to transmit a signal to your gaming system. Why would you not create a regular controller and have it transmit what you are doing through either wireless or a cable and have an effects unit process that information. This way the effects unit could be updated, you would have a platform for people to extend, etc.... This somehow makes more sense to me then to put everything in the guitar.