why? you like having a much lower accuracy?
most games who do have gamepad support usually have aim-assistance too, wich can mess up other's people aim when they use mouse and don't know about the assist.
so either it messes up people's accuracy, or it put's you on a disadvantage.
so, again, why?
i'm intending to do the same thing, i feel gamepads would actually be a better fit for the smart system especially doing manual smart moves (they're faster but require you to perform the actions manually)
it's a simple paradigm shift to aim with gamepads, you don't move the crosshair. you move the body. simply hit the trigger when the crosshairs line up with the target. personally i tend to do better with gamepads on this kind of game...not saying i'm a pro by any stretch of the imagination but I do better with gamepads. it's a preference. it may be a downgrade for you but if you play console fps more frequently than pc fps the kb/m isn't actually very good. likewise the opposite is true for the opposite group. it's all what your practised with.