Very well said, yes. They are all in the process of becoming more than their roles, but I think that even extends to Hand (as I said over at my place :)), in that to even begin to seek that facsimile, that chimera of humanity which the Strangers have generated, he has to transgress his prescribed role As string-puller, and allow his strings to be pulled awhile.

You're right: such a great film, and such amazing depth...