I would like to propose for HN open source project for developing a content curation system.

It's possible to infer and rank submitted link content automatically. This will help in removing completely irrelevant postings (e.g this thread - https://news.ycombinator.com/item?id=6942656 ).

Quora is doing something like this but it is targeted towards much wider audience. Whereas HN is focused on a special goal in mind so it can not be generalized for all kind of discussions.