I see what you are also going for David, but I think you sort of pointed out the problem with the solution. The "can't do it's" don't post their material. However, it might be because they feel they can't do it. There may be nothing for them TO post.
I'm with you on hearing what people CAN do. Whatever it is, I am great with. And I really mean that. I think there are gaps as far as genres of music; but I really don't think people that like whatever genre they are doing need to stop that and move to fill in the gaps.
I'm all for education as you mentioned. We are a community of creativity hear. I love learning all that I can from it. I've learned a lot to be certain.
Now, back to Herb's point. Since he brought it up, it REALLY has me curious as to what is being done by the people the make PG Music tick. I would hope they would feel safe in sharing. It would be a blast to know. They don't HAVE to by any means, and I would never want them to feel pressured...but...how cool would it be to get a glimpse and really be a part of the culture their wonderful products have created?
Herb, again, so cool of you to think of this!