Fans already hate 3 on 3 when the NHL does it, why would a full league of it go anywhere? Players who want to play in the NHL aren't leaving just cause of the money. They want to play in the best league in the world and this new whatever will never be it.
I think they'd pull some midlevel stars if the money is high enough. As someone else said, could hit the AHL hard, and the 3/4 liners in the NHL, again all depending on the money. Playing in the NHL is the dream, but having a larger nest egg for the 50 years of your life that doesn't include making an NHL paycheck will probably turn a lot of heads, just the reality of it.
I'm hoping players go in, milk it for all of the money they can, no one watches, and everyone who isn't a player loses their butts.