I know this can't happen, but I would love a way to control the input gain from the iPad operation. since the console is usually on stage, and I'm usually out roaming around with the iPad, the one thing I can't tell is if I have a channel that is peaking out, or not hot enough.
Being that I would have to run up to the stage and check, it sure would be nice to see the input level at each channel. Even if I couldn't change it, I at least would know what was in need of adjustment.