A large part of my last job involved designing hierarchal data structures for reporting Nokia's global delivery issues. My boss tried to take a "design by committee" approach to one such project and we got nowhere for months. Out of frustration, I finally "rebelled", spent a weekend designing it myself based on the inputs I'd been given and then offered it up for review. My boss was blown away. It wasn't the approach he wanted to use but he could not argue with the results. And everyone liked it.

Moral: designing a structure should definitely take everyone's concerns into account, but ONE person needs to do the actual organizational work, then ask for feedback.

In the case of this forum, I'm not convinced the "final" solution is the best one. It may be and I just need time to be convinced... or maybe a mockup should be done, discussed, and implemented when there's at least a reasonable consensus.