I think you are 100% right about the complex nature of such an idea. The thread can work, but requires enough generosity.
What I question is the nature of this "negativity": not all perceived "negativity" was necessarily negativity: our discussion over the Meeklo issue, for example, had nothing to do with bringing negativity to the thread, as I simply did not see fair how you treated him, no matter the offers quality.
Any given criticism in this case was legitimate, and not a criticism on the thread.
And when I asked questions it was just to understand better how the rules worked, but often people seem to be able just to post "facepalms", and that helps very little to understand questions at large.