for the button issues I suggest your cam goes with full integration of a metalayer that's dealing with assigning actions to all the buttons. I.E. include all the functions of shortcutd as a generic pkg that the cam is depending on. It's really a PITA how apps seize control of a particular button or switch or sensor, we should've had a genuine manager for *all* this from beginning, but as that's not fixable now we like to have humble cooperative apps that allow to free their buttons for doing sth different than what the app originally used it for. (bad example: xchat seizing the vol+/- buttons, even when they are freed in keymap settings of xchat. Here it's obviously the problem of original camera-ui seizing the camslider so it's hard to get a menu opening up on slider-open rather than the camera - buzzword flashlight)

/j