All of the usernames on our site are the first initial and surname (ZSmith). I have Membership Pro set to use the email as username at signup so our members aren't creating their own, and then I manually go in and change this. A wish list idea is functionality to allow for custom usernames. Even if it's just a handful of options like "Use first name", "Use last name", "Use both names," "Use email", and the one I need, "Use first initial + last name". Having alternatives would be really helpful.
