Separate the Dismount key from the Sneak key.

When I attempted to modify my keybind settings to line up with another 3d game I played, I found that I was unable to set a different keybind to dismount then the keybind I used for sneak. Changing this would cause convenience in those looking to optimize their keybinds, as well as those looking to set their keybinds to a set that they are familiar with.