You are aware of the City of the Brass Boxed Set that some of us have been referring to since page 1?
Or are you strictly speaking some WotC and/or 4e offering?
I'm strictly speaking of WotC/4e. And this is because WotC are the owners of the intellectual property we're discussing - even though in the case of CoB these have probably been circumvented for reasons somewhat outside the scope of what I'm talking about. IMO WotC is in the best position to develop these ideas so that 5E will not have YET ANOTHER 3 page description of CoB.
It just seems like these setting guides are easy to churn out and full of a lot of paragraphs of boring uncreative pseudo-history. "The elves live in a forest. The elves serve a queen. The queen makes laws and has a bodyguard of knights..." blah blah. I'm finding it hard to find WotC products that I want to spend my money on.