<p>Over on MSO this has been discussed, but nothing has been done. Perhaps it's time to resurrect the thread.</p>

<p><a href="http://meta.stackexchange.com/questions/28924/keep-short-history-of-user-display-names">http://meta.stackexchange.com/questions/28924/keep-short-history-of-user-display-names</a></p>