Bosh is probably done.
Wade might take less money to stay with LBJ... esp if they can get Melo. Miami doesn't need a PG, they just need a guard that can defend the opposing team's PG and I think Cole and Chalmers are okay in that role.
But if Melo is going to Miami, they really need another defender since Battier is on the decline and may retire.
Still... if I was LBJ, I would go to LA or even NY. Prove that you can win a ring elsewhere and that will put you up over Jordan and Kobe.
I believe Shaq is the only modern era AllStar that has won a ring with two different teams.