It's getting really old reading threads from people that haven't even run half of the instances in the game complaining about how little stories there are in instances. Please play the entire game before making threads about things like this. There are numerous stories in instances.
Considering how huge the chunk of time is between the Black Talon/Esseles and the actual story Flashpoints coming back, it's not fair to blame the individuals for feeling let down. That's just a poor design decision.