Mechanism needed to combat trolls

So in light of the (apparently ongoing) abuse that Hive account@feminism has been throwing at Hive account@lauralemons, surely there are changes to the steemit platform that can be made to help combat fuckwits( mind my french) like this?

In the absence of a moderator, would a mechanism such as auto-banning anyone that has a reputation under a certain level, like for instance if they are negative? That would stop trolls being able to run around and post vile stuff on peoples posts and might even help clean up some of the spam bots.

Thoughts?