Mouse Sensitivty lowered when opening a locked door

When I was playing the other day, I thought it'd be a clever way to add more of a challenge to the lock picking mechanics.

The idea is that the further up into the lock you move the pin, the more you need to move the mouse up because the further it goes up, the spring starts to build tension/stored energy to push the pin down further. It not only makes sense but adds another level to the already cool mechanic. Moving the mouse down would be quicker because you can rely on the energy stored in the spring to push it down faster.