It will never happen because its very one sided in our favor.
As a Kings fan I really appreciate what Brown brings to the team. He's cut in the Dave Taylor mold and is our captain for a reason. JJ has ALOT of potential but for some reason continues to struggle to put it all together. IMO Teubert will be a bottom pair dman that brings toughness.
Vanek would be the first legit top liner to play along side Kopitar. These two would likely elevate Kopitar to a 90-100 point player and Vanek back to a 40+ goal scorer. Obviously I'd like to keep Brown and offer Stoll and Moller instead, but to get a top liner you got to give back substantial assets.