I will very briefly address one question: If section 13 is brought back, should there be a threshold? There absolutely has to be. I'll rephrase the numbers I gave you. Every second, there are 6,000 tweets. Every second, there are 521,000 Facebook posts. There is no court, no quasi-judicial body, no hearing that could possibly deal with the avalanche of complaints that such amount of activity generates.
If section 13 is brought back, it should be for precedent-setting or for cases that rise to a level that cannot and should not reasonably be dealt with by the social media platforms themselves.