deskthority

Rereading your reply, I understand what you mean now. Thanks for informing me!

You'd only need to press at most one key and (maybe) one button at any given time.

Pro tip: Always post the link.
http://imgur.com/gallery/62mVQ

The album has the full explanation (I'll post here for the lazy), but essentially I'm making a weird controller/keyboard/mouse!

The "keyboard" is two controllers, with four keys and two "shift" buttons each. You type with the keys and change keyboards with the shifts. This gives you the full range ...