Modifying properties of a buttonName

Anyway to modify what key is bound to a "buttonName" or the sensitivity etc.

ie. I'd like to change what key is bound to Input.GetButton("Fire") etc.

Ideally, I'd like to have access to Edit->Project Settings->Input in game.

The input class doesn't seem to have any ability to set values and it'd be very convenient to be able to modify values in game otherwise going to have to write own basic input class.

Does seem so basic/fundamental that I nearly feel silly asking, yet I couldn't find a way.

Vote for it here.