@drq @mittorn @mo
Straight up, graph the current discussion and then illustrate which threads/replies you would merge by, like, multireply thing and pass by all references you end up grabbing. You would get loops, because these posts share something you considered in common. They may be in parallel threads or in the same one, still loops at some point. Then backend implementation of parsing this stuff goes into play and it gets messy.

And break backwards compatibility...