One thing we need to figure out: how to ban assholes instead of banning features. In general, things can be either interesting XOR safe, and we're killing off more and more interesting things[0] on the web just because some assholes will surely make use of them.
[0] - like e.g. calls for rate-limiting access to phone gyroscopes, or banning it altogether, in https://news.ycombinator.com/item?id=10914666.