Master loot would be a decent option. It's not something my group ever used even in FFXI where it was available (quartermaster I think...?) but I can see how some people prefer a system that puts trust in 1 person instead of everyone you're running with. To me the more important addition would be the ability to pass after needing or greeding (and possibly to change your need to a greed). Usually you can just leave if you meant to pass but didn't, but sometimes everyone else will roll before you get out. I've also seen situations where people use need, forgetting that the person they're rolling against is on a different job for that particular turn. It never causes drama for us, but it certainly could.