Well this certainly opens things up in a big way. I bet I've read about it here before, but it just didn't click until now. Now I just need to see what there might be I can use in my research. Also what it takes to connect the books and records I've been using. I can see a bunch of questions in my future.
Added: I don't see either Rick Pierpont or Chris Whitten having chimed in here yet. There was considerable discussion back in early March on using sources which basically rely on Transclusion. I don't see that it's been finally settled yet. So while it's great having the resources, those wanting to use the material may want to hold off until a final decision is made.