Description: Lets say the player enters with a name thats already registered. To make it eazyer for the player to play there will be a button located below on the login dialog, when the player clicks the bottom that will show a dialog for the player that will allow them to change there name then register and then play.
Reason for suggestion: Cooler and faster playing.
How it benefits the server: It will be better the server.
I made a system like this, when you enter a invalid character like ! it will say invalid character. use [a-z, A-Z, 0-9] if the nickname is already registered it will say The nickname Kevin is already registered. try again, if you exceed the MAX_CHARACTERS it will give you a message You have exceeded the max characters [3-20] and every time when a player changes his name it is always successfuly. If you don't know how to make this Script i will be happy to make it for you guys.