I'm all for being able to skip story quests if people have no interest in it, but people need to level from the ground up. I do not feel the story helps people to learn their classes. I feel it is the leveling, going into dungeons, getting your skills in little doses as to not overload someone. Leveling does not take long in this game, and if you can skip the story, it would take even less time to get to higher content.
I do not want to see a level booster that brings someone to max level out the bat. My experience in wow after theirs was added completely ruined my dungeoning experience, so much so that I ended up quitting. I mean, I do enjoy helping people, but I already deal with people not listening to advice and think they are experts (even though they only played the game for a week). It would only get worse with level boost potions.