Hoy Saltydog,
I think that would be very difficult to do.
That member has registrated himself with that name at the time,and maybe registered his licencecode.
What would be helpfull maybe, is that the memberslist instead of an alphabetic order,would be changed in 2 parts.
On top,all the members which are active,also alphabetic
than the members which are not,or even never posted something,also alphabetic.
Than you can see very good,who is active and who not.
Regards
Marc