But I also expect civility would increase markedly.
Ryan Holiday made the point in Conspiracy that the Gawker case was one of the final nails in the coffin of the seemingly never-ending era of awful sensationalist journalism. It was always awful, but it took a while for society / journalism to realize that and act accordingly (i.e. more civil).
Of course, bomb threats are different from raunchy upskirts, but I wonder (also non-rhetorically) what our world would look like if there were actual consequences to spewing hatred from behind the cover that is the Internet. I doubt it would be much worse.