Re: Alumni membership site customizations
You can’t bypass usernames altogether, as they’re needed for (among other things) BP URLs like example.com/members/boonebgorges/profile. But you could autogenerate them from the user’s fullname. You’d need to hijack the registration process by filtering ‘bp_core_validate_user_signup’, unsetting the error that comes from not having a username, and then generate your own username with a bit of PHP. I’ve done specialized versions of this for clients, but a more generalized one would make for a nice plugin. Any volunteers? 
