I do not use Twitter. When I register for a WordPress website, I do not realize that the username will be revealed in BuddyPress. I prefer to see my username as part of the login secret and I think many of my BuddyPress friends will feel the same. I would like to see a setting that makes it possible to use the real name or the nickname on screen as is the case for comments to postings in WordPress. Or a plugin to do so.
I do agree and would like to see a possibility to change the exposed name on screen. It it not practical to have the username exposed and the users do recognize their buddies better by using the real or the nickname. How can this be done?