IMHO
I would agree with Werner and Pieter's comments, and nopanic's K.I.S.S theory.
This would keep the site within GF's preferences, it would be nice to keep the relaxed atmosphere of the site as it is.
It does not surprise me that the ACO keep an eye on this site, and you do not want to piss them off. Nothing would finish this site off quicker than a copyright case in the courts.
We are just trying to find ways to pay the server costs, let's keep things in perspective.
As for new members, they have found the site before, I estimate that over 50% of the regular posters today, were not members when the site changed it's format, let alone before that.
But I do agree that business cards would be an excellent idea, I'm asked several times each LM about the site, and I bet most of the people you tell the address to forget it by the time they get back to Blighty.