Seems like there is not much interest from official side. A similar discussion ended with Fabian adding a link (clicked 9 times by now) to a google doc in this post: Collaborate document for host specific behaviour.
My personal feeling is, as long as these collaborative information is put in such obscure places, it is not very much appealing to contribute. I only take the time writing, if I think is helping anyone…
But if it’s a more visible thing, I think I find stuff to contribute.