We need a USB/HDMI output for the DMD/LCD Screen to make streaming not require a camera for score boards.
I'd also add, this USB jack should provide some sort of API, where we can write code to figure out the current state of the game. Basically, a public API that could tell us "current # of Players", "current scores", "current ball", "number of tilts", etc. This could also make for more fun integration with live streaming pinball.