Discourse, in nowadays, is not a Q&A software.
Rationale: there are some well-known Question-and-Answer softwares (Q&A), like AskBot, but Discourse is not figured there. And a lot of black-box interfaces, as Stackoverflow or Quora, that can be classified as Q&A sites, but we not see any Discouse-site figured there… Even a site using Discourse with some plugin or some alternative module.
We (example) need not a topic-blog, but to vote the topics and the answer-posts, and we need a good interface to it, and a good database / back-end to it… Not a “secondary like-vote” or a fake feature… But “near to clone” interface, like AskBot/Stackoverflow.
And there are a big market demand (!)… So, why the resistance to build a good module or plugin for it? There are some legal impediment (Jeff vs Stackoverflow competition)?