Gamepads with LED Touchscreens

Maybe this hits on a broader idea, which is the desire to remove HUD's from the main screen?

Perhaps one way of doing so would be to have them handled at a system level? So the HUD is rendered separately and can be overlaid onto the screen (as they currently are) or can be output to another device, whether smartphone, tablet, or controller. It would prevent developers from having to implement it themselves, which seems to be the biggest hindrance for any feature.
 
HUDs are already drawn into a separate buffer and overlaid in hardware, allowing native res HUDs on whatever resolution game render. It should be straight forward to send that buffer to a different device.

The problem is a HUD designed for a 40" 1080p TV isn't necessarily great for a 4" 4:3 aspect phone or an 8" 8:5 tablet, so devs would have to create UIs for different viewing devices. And some stuff you want very visible, to see exactly when your skill has recharged for example.
 
The best way of removing the large HUDs is having the information still available on the screen but in a less "in your face" way. For instance, in scifi shooters, have the gun model have the ammo count on it instead of it being directly in the corner of the screen at all times.

As for supporting secondary screens, this has been available forever, or what seems to be, ever since Xbox supported Xbox Glass on the X360. It never took off.
 
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