Enable forum like, two-level threaded discussions in place of or in addition to comments

It would be great if Confluence supported more forum like discussion capabilities, i.e. very thin subject lines for each thread topic that then link through to the full thread - like traditional forums.

It would be ideal if comments could be turned into forums at a page level as a page option and it would also be great if discussions could be held either in place of comments or under a seperate tab (if discussions were turned on for the page). Customers have requested both alternatives during discussions.