I miss the missions so bad, I like the persistent world of GW2 but I honestly think in my opinion that the personal story is the worst part about GW2. They're very shallow and unrewarding, sure you can invite other people but they are meant to be done solo in order to get a sense of challenge. There are also quite a number of bugs and missing dialogue in the later missions, sure there might have been the same problem if a mission system had been implemented but playing through the storyline up to Zhaitan with 3-4 characters I just feel that many of the storylines are quite sloppily done, some are excellent but overall it's not what I was expecting from Arenanet and gives me the impression that they sacrificed the quality of the story by trying to dilute it down into too many different branches..
Edit: People also need to stop saying that Guild Wars 2 is a completely different game. WE KNOW, doesn't mean we should stop suggesting things that have worked previously and would improve the game.
Even so, some dialogue is missing in the personal stories or even when you talk to the heart guys. And yeah, I won't even mention the last boss fight haha. It's good, but it feels really rushed and unfinished. Hopefully they'll patch it up soon