Ol' casual me was a bit disappointed for not getting a true Vision Crystal as a reward for the big fight with Scarlet instead of the lesser one that was given to us, because all the other parts of the events leading up to the fight have been giving materials needed for the new backpiece, but that's just nitpicking. I enjoyed the big fight today after they'd fixed the bugs from yesterday, though the achievements for the lesser bosses around the now miasma-free LA aren't that exciting.
Most of the story missions in GW1 were replayable, and people didn't seem to have a problem with that. Want to try and stop the Charr horde at the end of the Great Northern Wall mission after just coming back from the Realm of Torment and having defeated Abaddon? Go ahead! Many even used the earlier missions to farm for materials
Then again, it's been almost 9 years since Prophecies came out so people's mindsets have of course changed.