I was wondering if enough folks are interested in compiling a set of human interface guidelines for GCW-Zero?
Unlike the software porting guidelines, these would be optional, and for developers who want to improve the accessibility and consistency of their programs, by following consensus advice on how programs should look and handle input. This could include things like minimum font size, using start to pause/unpause. Some guidelines are universal and followed widely already (e.g. A to confirm, B to cancel) so there's no need to include those.
A good example of HIG would be the one for iOS: https://developer.apple.com/library/ios/documentation/UserExperience/Conceptual/MobileHIG/
A pet peeve of mine is that quitting programs is inconsistent, which is all the more annoying since the GCW-Zero doesn't have a "home" button. SIGHUP is less than ideal since the game may not save progress. One option is to have the select button always navigate back to the previous screen, so pressing it repeatedly will eventually close any program, similar to the back button behaviour in Android.