I think the IndieWeb wiki would be a good case study/thought experiment around the benefits/disbenefits of a distributed wiki approach. [[Corralling a chorus of voices]].
I think that it would be interesting to have [[node club]] nodes of the week that are more [[notion]] / declarative statement-like, rather than plain concepts. As Flancian said this would stimulate more dialogue. And then see how this works with regards to finding convergence/divergence of opinions on a topic.