The member ratings goes back to what I said earlier:
"This site was never a site of competition. If people feel the need to be recognized for posting a thousand times, this is not the site for that. "
My interpretation of member ratings falls back on this. Like handing out a trophy, or something.
I don't see why it would bother you that you had to re-register, thus making you 'seem' new. I was originally number twenty something, but due to my multiple personality disorder, I renamed myself and now I'm number 2799. And it doesn't bother me.
Stick around, you'll get to know which members are are full of unsubstantiated noise, and who isn't.