Although I'm sure there are some that like to raid here I suspect the majority of people dont. The game industry is filled with the corpses of studio's that tried to copy "That Blizzard Game".
I just read an article about their [bliz's] CEO getting 35 mil p/a, firing staff and increasing prices. Frankly their product isnt worth the value and I suspect gw2 is about to start getting an influx of new players ;)
PS: I dont blame them [gw2] for "wanting to have a go" at attracting more people to raid, its just that it most likely wont work and will detract from resources better spent on their core model.