I've seen a lot of discussion lately about making content more exclusive, especially in light of Raid Finder and Flexible Raids. It occurs to me that everyone arguing for more exclusive content just so happens to be in a position to do that content.
Perhaps Blizzard should make more exclusive content. I suggest they start with a long, lore-filled questline with amazing rewards. However, you can only access this questline if your account, on any character, has never killed a raid boss in normal or heroic. And if you do kill a normal or heroic boss afterwards, the rewards become unusable.
Let's see how long the calls for more exclusive content last after that.