I would LOVE to see BBpress integrated more thoroughly into WP.
Blog posts that can automatically turn into a full forum discussion and debate. Now THAT would be a thing of beauty!
This themeplayground podcast has asked that question.
Blog posts could have "comments" as one option for commenting, but the REALLY powerful conversation starter would be the option of instead of "comments" posting under the post, the article stays nice and neat on its own, but the user is redirected to comment on the article in the FULL POWER and convenience of BBpress!
That way, people won't get lost in the weird threaded comments section with no real post URL to come back to, etc. I'm currently in discussions on a blog where negotiating the threaded comments area is a MESS! AND when I click on the email notifying me of a reply, it doesn't land me back somewhere convenient to post. NO, I have to use FIREFOX to search through the page to some words from the last reply!
See this political journal....
It has main articles, someimes a few pages long, and then a separate comments FORUM (but which is not as powerful or beautiful as BBpress).
So make BBpress a plug-in for WP, and make it unbreakable. Have the forum categories that relate to blog categories, so that the blog post can also turn up as a forum-post conversation starter (automatically). Maybe this would function as a separate view?
That's roughly how I imagine it would work.