> I'd love to see if somebody ever tried to "go big" with RSS
I would bet decent money that between Dublin Core, indieweb and various other XML standards of the day, something like that is already defined / describable, it's just not used because the model you suggest doesn't scale well - once comments are in the thousands (which happens, on FB or twitter), single files become unwieldy and the clients get too slow. If you steer away from single files, now you have a protocol that also defines URLs that clients and servers must agree on, increasing overall complexity. It has nothing to do with RSS, a format that has been extendable through XML schemas since 1.0 at least; it's that nobody could agree on such schemas in numbers high enough to make them a de-facto standards, because most actors had an interest in lock-in on their own platforms.
I wish you luck, but this space is hardly new. The challenge is not technical, it's entirely a political one - a lot of people have to agree and implement a standard and then reach some sort of critical mass without triggering the search for lock-in.
I would bet decent money that between Dublin Core, indieweb and various other XML standards of the day, something like that is already defined / describable, it's just not used because the model you suggest doesn't scale well - once comments are in the thousands (which happens, on FB or twitter), single files become unwieldy and the clients get too slow. If you steer away from single files, now you have a protocol that also defines URLs that clients and servers must agree on, increasing overall complexity. It has nothing to do with RSS, a format that has been extendable through XML schemas since 1.0 at least; it's that nobody could agree on such schemas in numbers high enough to make them a de-facto standards, because most actors had an interest in lock-in on their own platforms.
I wish you luck, but this space is hardly new. The challenge is not technical, it's entirely a political one - a lot of people have to agree and implement a standard and then reach some sort of critical mass without triggering the search for lock-in.