The leap range is limited, yeah, it loses tracking if you don’t put your arms up, but generally it works well. Also has a handy ‘sticky controller’ feature where if you move the controller out of its range, it sticks to that spot. I’ve been using that in Doom BFG to attach the flashlight, hold my gun if I am lazy etc. Not sure if that is intended, but it works.
That said, yeah just wait for kinect hand tracking.