Cheer to sandbox MMOs!!!

I only hope they are working on viable systems for player self-justice. For example, a repeat greifer who prays on other players in a certian area might be able to be "banned" from that area. Maybe the ban is that wandering guards kill him on site or maybe he is transported across the world without means to return for a real life week or something. There are many ways to approach it.

My point is - sandbox MMOs can be really awesome. If you want to open them all up, give the players tools to enforce justice. After all, we load up MMOs full of tools to kill one another. Why not ones to protect and administrate consequences that are meaningful to the offender?