[Clive Hetherington]

I’ve used WP for years too and when I switched to WPMU and BB as a community the username default setup does not go down well. I’ve only a small number of registered only users and I set their display names to their name manually with each new registration (with less than 20 users that’s doable). Looking through my entire BB install I cannot find any username mentioned. So, maybe a plugin to automatically make users display name their first name (or first+second) would work for you? The @mention should also use the display name too else it’s probably unusable in a community space. Real people – real names. I paid to have BB chat component work with ‘display’ names for the same reason else some of my users would not know who they were chatting with.