Forbidden/Banned usernames list
To make security better and prevent possible bruteforce-attacks I would like to see an option in WHM/cPanel that allows the system administrator to create a list of forbidden or banned usernames.
I came up with the after reviewing my cpHulk notifications on brute force attempts. A lot of common usernames are used to attempt the logins like: backup, test, test123, ftp on different authentication databases.
This way the security will be better because the username is already bocked instead of waiting on a number of invalid attempts.