Who would Chicago have to unload? Taj, Dunleavy, Mirotic and Boozer? A core of healthy Rose, Noah, Butler and McDermott still nice tho but you right if you Rose goes down, he's pretty much going have to do all the scoring.
Houston has to do some unloading too which I'm sure they can but Melo and Harden is pretty much a disaster waiting to happen unless Harden drastically changes his game.
Dallas is a darkhorse especially with Cuban but I don't see Melo going to Dallas to play with Chandler and Felton. Monta and Dirk could appease him though.
With Lakers, he obviously gets to play in LA and he gets to play with Bean but I think we would have to make another major move to be on the top of the list. We can let him pick the coach I guess