I’m also looking for a plugin which is doing the following:
- Deactivate comment function in Wordpress
- SSO (sign in in Wordpress, autosignin in Discourse)
- When creating a new article in Wordpress, i’d like to choose the correct Categorie and the exact Board in which i want the topic for the discussion to be opened
- I want to set the title for the topic inside my blog-post creation mask
- At the end of my blog post, there should be a button which says “XXX Comments” and is a href directly into the discussion.
- The Topic should contain the first 250 characters of my blog-post (Textarea, for Copy & Paste) and a button “[…] read more” which redirects to the article
- Discourse should be a part of my site, my theme, whatever and not a standalone solution. The user should see my top navigation, and maybe my own sidebar. I only want the topics / categories to be displayed in a smart, mobile and optical good way
As far as is searched the whole web for that, no software is actually able to do the exact thing i described above 
Maybe we can crowdfund sth like this? x) Or there is a developer out there, who will do this?
If you want users to come back and visit your site again, you need them to interact with your site. BBPress is not usable for me, as it is only total standard. Having users discuss about articles inside a forum like discourse, with such great features, would realy be a overvalue!