Dragic is old already and If I'm not mistaken, I've read somewhere that the Bulls get him to somewhat have a veteran presence to help Ball. At least somewhat who can guide him to say the least.
As far as seeing 2 Warriors, yeah, I'm not surprised, both Otto Porter and GPII really help them in winning another ring and it was good to see those two getting the money they deserved.
But as far as I can remember he was not really that effective anymore so being a veteran in one team using his experience would best match what is needed from him.
As of the other players, I'd agree they are the ones who are underrated that will be a game changer.