I think at the very most it should be first name, last initial under your S/N, or just your first name or something, but nothing more than that, there's no reason for people on here to know my first and last name. And as some people have already mentioned, I always sign my PMs with my first name anyway.
It's a good theory, but I don't think it should, or would fly. Besides, with a community this big, there're lots of repeats of names (like the Sean calculation), so having names on here would be a bit of an issue.
Besides, half the fun of this whole thing is having a 'callsign' and being some weekend warrior.... Like someone else mentioned, scammers will still scam, so I don't think it'll get rid of that either.
Ubique Quo Fas et Gloria Ducunt
Alternatively, I could just light you on fire. - Me