C (pressed) is definitely useful for when you're moving quickly and suddenly have to crouch, but also I think CTRL should be crouch (toggled) for when you're going to be crouching for an indeterminate amount of time. You do see this is some games where there's a button for pressed crouch and a button for toggled crouch (I think the Penumbra series did this, but don't quote me on that lol.) Thanks for the quick response.
Do you think you'll continue working on this game?