Valve's main objective was probably to replicate the keyboard/mouse combo rather than improve or alter the standard joystick gamepad (like the X360 Controller). In the end, it looks like a controller halfway between these 2 types of input. The main problem with a controller-based "mouse" (and it shows in the video) is that you control the cursor with only your thumb rather than your full hand gently set down on your…
"I guess we'll never obtain a perfect alternative to the mouse" Because Valve's first effort doesn't completely replace a mouse? That seems a bit defeatist. "control the cursor with only your thumb rather than your full hand " Control with the thumb vs hand isn't the problem so much as that thumbs are not pointy like mouse lasers. Valve should look at adding a tiny fingertip digitizer. Of course they are still lackin…
The mouse was patented in 1947. Since then is has not been bettered. Valve are not the first to try.