How does the Hololens 2 matter?
Instead of getting rid of the keyboard, mouse and standard 2D display, why not start with augmenting the reality around those? Keep the keyboard, keep the mouse, keep the high-speed, high-definition display, there's nothing more efficient. Touchscreens don't even come close to matching that combo in any domain, let alone exceeding it. What chance do laggier, less touchable figments have? If you can't find something that augments that reality for the better, it's time to move on.