I really don't understand what you want to explained exactly. Most likely you are suggesting implement blog like blogger.com. I don't think it's good idea. Your threads are almost like blog. Everyone able to discuss, this forum is belongs to cryptocurrency and free for discuss. Creating extra blog isn't going to reduce spam. No one will go there for discussion because of signature campaign.
Whatever you suggest to prevent spam, don't forget about signature campaign. This is the main reason of spam and it will never ends.
He is talking about something like this:
SMFBlog plugin Vanilla blog pluginsvbulletin.org journalThese examples are not so great. But if it was something well done, simple and minimalist. It could be quite interesting. Github has an interesting blog system that seems to be easy to integrate.
I think a live chat or IRC integration would be interesting as well.