Keybind

Am I the only one who finds Keybind disappointing?
If you want to use a key that's already assigned, it will be on both actions at the same time.
For example, if I use buttons 4 and 5 on my mouse for a specific action like crouching, as the keys are default for gadgets, when I crouch, I also use a gadget. It's impossible to remove the key.