Pretzel - if this system goes into action sometime down the line and requires moderation I'd be happy to chip in. Get at me!
I think it's a great idea that will inspire people to get involved in the musical aspect of this site at all levels, especially if there is an aspect of EXP or recognition for positive contribution. Older artists would help the newbies, people who just listen can give opinions and contribute in a qualitative way, and everyone learns more.
@Mirby - not a lot of people coming up use IRC anymore. Not to say that it's outdated, but probably not going to be as effective as a forum feedback system if you ask me.