I am looking for a solution that allows me to change the startup disk without clicking the padlock, that doesn't require me force-auto-login-ifying the Root user. Not having to use the padlock system in settings at all would be an excellent bonus if possible.
BootChamp doesn't seem to work anymore, either, for the record, otherwise I would use that.
I do not use OSX to install or run anything but one website in Firefox. I'm comfortable reinstalling OSX and/or having data stored within OSX compromised.
If the password you are referring to is the firmware password, you would want to reboot the computer, hold down the Command+R keys to enter recovery mode, and in the utilities menu you can choose to turn the firmware password off.