And it's not all existing buttons. For example you can't map either of the stick clicks or the start/back buttons to the paddles.
Another annoyance is there is no quick way to switch more than 2 configs. I would love to be able to set it up like the SC where you can map the config to a specific game so it is alway set correctly.
I was hoping this Stream driver would solve that but apparently it's a hardware design (and a bad one IMO)