This is something I really want in the game, but I'm a bit bias in this so I'm going to make a poll for it since I realize I sometimes have very unpopular opinions. So I'll ask.
Would you enjoy a Short to medium Quest Chain(achievement chain) that takes about an hour to maybe three hours to complete that slowly unlocks the Traits and weapon of the elite specialization you are going after? The chain would provide quite a bit of lore for the elite specialization and give you the opportunity to connect with it's design. The wouldn't so much apply to WvW players and not at all to PvP players.