Main people should have a gallery, like a gallery list or directory or something. It will be up to the moderators and community who is a "Main G&A Member"
I agree with sweenytodd. People have different styles. Some people work faster and some people make nicer art. I go around from shop to shop. The one I have currently is mine, but I have used several sig shops. Just looks at sdrakulich's sig. There is a quote from me.
Thats like saying, why don't all religions just mesh together to make one BIG happy religion. Lol some people just don't work well with others. People have different styles, and multiple people would want to grab the same request.