Verified accounts are those likely victim of abuse, and I believe that is it likely that if you suffer from impersonation, you also suffer from trolls. Verified accounts are the most likely candidate for the need for more protection.
Something else that is at stake, and something that you are explicitly asking for – but I think it‘s a serious mistake: the dichotomy between celebrities and commoners. There never were a clear gap, there, but the idea that being on TV, in the press, or owning land made you special has proven dangerous. Having a gradient from moderately interesting anyones, to popular people within their social context, to relevant expert, opinion leader, up to professionally famous people, that “smoothness” of fame is a great, empowering change that the Internet has brought and made visible.
I think we need to understand that, and adapt (currently blunt) disclosure rules to that smoothness: you can make something a little bit more famous than they are, but you can’t shift them by several orders of magnitude because the attention, grief, consequence of that is something that needs to be learnt, understood, accepted.