With respect, I think this would be a bad idea. Running off potential members with privacy threatening registration requirements is exactly the wrong thing to do.
I also totally disagree about the state of this site. I think the problem is not immature posters or those with multiple screen names, although I do find that a bit odd I admit. Instead, it seems to me the site is becoming kind of boring. The fun police seem to descend on anyone who is not deadly serious. I think the turning point may have been when posters actually were angry about the infamous Shill Securities, a lampoon worthy of being in the WSJ. And need I mention the Huge One?
Personally, I miss TradeRx and some of the other zanie characters. I know its not everyone's taste, but this game can be tough. Enjoy a laugh when you can.