If you don't participate in "x" event, you don't get "y" item. How hard is that? What would be the point or motivation to participate if I knew I could sit back, pay a sub, and know I'll be able to collect all the content without actually playing? And people who say "I pay for the game, I should get it". NO, you're paying for a persistent world experience, and limited items ARE PART of a persistent world. It's the attitude that "I pay for the content, I should get it" that leads to the cash-shop games killing the MMO industry. When I can BUY what I want in game rather than playing for it, I move on.