Chris Wagner wrote:

I was wondering if anyone could tell me if there's any way to display any kind of user information about the user apart from just the address on the Membership Management administrative interface......

Would command-line work? There are several administrative utilities in /path/to/mailman/bin, such as list_members and dumpdb, that might do what you want. In addition, the "Mailman" module will let you access list information directly from a Python script (which is what list_members, dumpdb, and Mailman's CGI scripts do).