I totally disagree with this. I think you lose a huge pvp dynamic, know your enemies habits. If you are in a GvG or RvR, you will change your strategy based on the person on the other side. After years of fighting, you learn their tendencies and try to adjust your tactics based on them. I think it gives a dynamic you will never get in PVE. And it is always fun to chat with someone after going at each other for years. I enjoy defeating a friend much more than a stranger. Toxic people will find ways to be toxic, that's who they are.