If it truly was participation based, and anyone who risked their lives could get a drop, it almost sounds like the definition of fair. If I run in there with my pld with no party and tank it just so the surrounding mages have a window of safe nuking, and we had both had chance at drop, I call that fair. IF IF IF that is how they have it set up.

In the past they have mentioned their hesitance of open world content. If participation is part of the equation, it is a welcomed mechanic by me. It is probably not how they made it though...