Eh. I can see both sides of this. For me, it would primarily be a tool for my own self-improvement. How do I measure up against other DPS in the party? How can I improve? Of course, there's always constructive criticism too. How can I help someone else improve? For some people, though, this would become just another tool to assist them in being elitist. SE seems to be wanting to cater to the casual gamers as well as their more hardcore players, so I can see why they wouldn't want to implement this in an official capacity.