>>287407814
It doesn't have to be the ideal implementation to be an improvement. Aiming a gun in VR is something completely different to using a mouse and keyboard, reloading the gun is changing something from a button press animation to set of user interaction. 

A gimmick is something that offers nothing substantial at all, for example: the sword in Twilight Princess doesn't add anything because how you moved the controller made no difference at all to the attack, it was just an inferior solution to a button. Even when they added the second Gyroscope for the second Zelda game, and it could actually distinguish horizontal and vertical, it was still arguably a gimmick because the same control could still be implemented better on an analog stick. Mouse to aiming is 2 degrees of freedom to 6, so it's something that could never be implemented usefully on anything but motion controllers.