I would think making you a member 2 would be feasible with some work. USRID is in around 20 or so tables. But I am not so sure about using member 1. It is pretty much a place holder.
In anycase I think it would be a big undertaking just for a vanity number.
I was using classic which I installed and I was user 1. But upgrading to threads made user 1 donotdelete in the user table and I became user 2.
Maybe someone else will chime in but I would just forget about it.
