Thanks for sharing all this information about these pads, I've been waiting for someone to receive some and talk about them. Although there was another thread about these pads already, no one had talked about actually having one yet, so it was all full of speculation.
Now we need to turn the thread into a guide on how to modify these pads to work as 3-button pads, how to add/change the functions of the buttons, and how to prevent them from sending a 5V signal if they do.