Changing Registration page

[kstolee]

Rather than ask users for their desired username, I want to enforce a standard of first initial and their full last name. I don't even want to ask them for what they'd like for a username.

Am I better off creating a brand new register template, or modifying the existing one to remove the username text box, add a firstname and lastname textbox, and some logic to create a username based on the entered information?

Thanks in advance