Yes but <patient face> we can only do it for posters who "owned" the nickname in the first place.
And Tee2072, lovely as she is, doesn't "own" the name Tee. Someone else does.
Nicknames are "attached" to email addresses. And it's a LOT of work to unattach them from one email address and assign to another. Not to mention all the possible ishoos that could arise if the name has acutally been used to post on the boards before.
It has been done for others before, hasn't it? Pinot I think, and other people who had flounced and deregged... So it would only be fair to do it for you (people might not recognise you then though...:P)