I was considering developing a plugin which allows you to lock your player.
This would be OPTIONAL.
Basically, every time you log in, you would have to input a password (NOT your mojang/minecraft password). Until you input your password, you cannot see, move, or interact in any way shape or form. Literally all you can do is talk (in case the plugin bugs out somehow and you need staff help).
We would not be able to see or access your passwords. Yes, the passwords will be saved to a database, however they will be obfuscated and entirely random. If the server were to restart, the obfuscated passwords stored in the database would look entirely different because they were re-obfuscated. Again, we cannot see what the passwords are.
If you think this plugin would be helpful (or not), please post below with an explanation. If there's no interest in it, I won't code it.