Well after hearing of a 2nd WU Player authentication breach, i think it's time someone made a Player Authenticator that makes it so when you join the server that has this mod on it, you can set a password for the character and if its typed incorrectly, it kicks you. If typed correctly, it let's you see your inventory, move, interact, talk on the server, etc.
Perhaps use the method of not rendering the world/interacting with first joining a server/character creation? i dunno, just spitting idea's here