@Paul Cunningham - I 100% agree, however, for that to happen, you have to have a successful and/or respected publication. Now, certainly Justin Tadlock has the community clout to help put something together, but without the initial support of others, getting to the point where you are big enough or respected enough to get people willing to work for free can be difficult. That's just the reality.

I like the idea of having an experts-based tutorial blog of sorts -- I do -- I just think that it is unrealistic to expect the best and brightest in the community to volunteer their work for free straight out of the gate. My own guess would be that time would be the biggest limiting factor, even before money (see, money or other incentives can make it worth making time). Otherwise, if you're a successful WordPress professional or community member who has your own site, finding the time to contribute updated, consistent content for the betterment of the community can be difficult -- especially as Ozh states, you have your own outlet for that sort of thing.

I think that if a solid plan and focus can be presented with what the idea is and with a guarantee that the people putting together the project are going to stick around for a while, you could probably build some traction and get some contributions. But I think that sort of outline and commitment has to be there for people who have the skills and expertise to be willing to contribute. Part of the reason Joomla's thing works is that it is an official channel. If this was an officially sanctioned thing, that might change things -- but either a solid commitment or official backing (or at least acknowledgement) is likely needed to get the people that are needed to make something like this successful has to start first. Without that, you've just got yet another wordpress tips and tricks blog.