See that's the whole problem right there, asking what he's done. It would probably elevate his game if he played alongside better talent plus who knows how the other two would feed off him in game situations. Lines need a better balance and the only way to do that is to give the younger guys a chance.
If Koivu or Staal were traded to a playoff team they would be 3rd liners at best. WE NEED TO DEVELOP OUR YOUNG TALENT! sorry to yell but no one seems to understand this.
Moving JEE up the lineup won't do any good until he gets good at the basic things, it's been tried the last 2 seasons. He doesn't process the game fast enough to play with "skill" players. The only player he has had any success with is Foligno. That line plays a simple game, and it'll force JEE to be more active in the o-zone, because they do get their scoring chances.
They are trying to develop Donato, Kunin, and Greenway together. This could be rather easily be our future 2nd line.
Fiala needs to develop some sort of defensive game and understand the risk/reward plays better. Playing with Koivu is the best place to do that. Zucker (for now) gives him an outlet for passes as a skill player. He also has 200 NHL games under his belt.
Remember BB is the coach. He mixes up the lines all the time during games. If one line, or player is playing strong they'll get moved into a "better" spot. He also runs the lines pretty equal until the last 10 mins of the game.
Make the kids (and vets) earn their spots in the lineup. They will get their chances.