Joost de Valk makes an interesting suggestion, namely that Wikipedia should drop all external links other than to DMOZ, and rely on DMOZ as the outside link directory. As division of labor, it makes perfect sense. However, it’s a total non-starter until at least two problems are solved. First, DMOZ has to be much more current and comprehensive. I don’t think that can be done to the level Joost envisions without a multi-tiered site selection system — part anyone-can-vote social media, with a controlled group of editors able to preempt or override the mass selections. Reading his post, I gather he recognized that point, or had similar thoughts.
But there’s a second problem as well — mapping Wikipedia subjects to DMOZ categories. How’s that supposed to work? For most Wikipedia subjects, there’s no obvious single match in the DMOZ ontology. And it’s more than just a matter of the categories not existing yet; I don’t think they can exist until the DMOZ hierarchy becomes much more interconnected.
I think it would be great if ODP/DMOZ were enhanced to A. Accomodate public input and B. Have a multifaceted ontology. But until there’s a DMOZ 2.0, I don’t see how Joost’s idea could work.