I would love to have something like this. However I think that you may be overestimating the willingness of people to contribute high quality discussion about a paper. The people best able to offer expert critiques are the same people who have the least time to do so. The fact that the peer review system regularly manages to do so is something of a miracle, but that's because we've managed to get prestige and career advancement tied to membership on program committees and editorial boards.
I think for something like this to work you'd need to think carefully about how to compensate reviewers. And I don't think that compensating them with money will work that well, since most academics care much more about career advancement and prestige than money (otherwise we'd be in industry...)
I would love to have something like this. However I think that you may be overestimating the willingness of people to contribute high quality discussion about a paper. The people best able to offer expert critiques are the same people who have the least time to do so. The fact that the peer review system regularly manages to do so is something of a miracle, but that's because we've managed to get prestige and career advancement tied to membership on program committees and editorial boards.
I think for something like this to work you'd need to think carefully about how to compensate reviewers. And I don't think that compensating them with money will work that well, since most academics care much more about career advancement and prestige than money (otherwise we'd be in industry...)