So, then what would be your suggestion?
Could it be that the actual idea of an MMO (that being a multitude of people all playing the same game in the same world at the same time on the same screen) would eventually lead to the raiding scenario?
Most every single-player game has a set piece that the player has to attack/conquer/etc. How would one do that in a game with thousands of players at a time?
I am not coming down on you or the question, truly curious as to what you envision.