lock-screen: Make the "Switch User" button more discoverable
The new design is very nice, but I feel the position of the "Switch User" button is confusing. It is not where the back arrow of the screen is, which contradicts the mental spacial model made by the user.
Therefore I suggest moving the "Switch User" button to the left of the password input field, in the same place as the back arrow. This would make it look something like this: