Good thing is, it was probably just a little Lucas humor. If not (since he has had crazier ideas that he actually went ahead with), I guess Rick isn't quite the worthless little bitch we make him out to be. He's earned his keep and my respect with that. But, Hardcore and Shimraa, we wouldn't be upset simply because it's a change (although changing for the sake of change is stupid as well), but it would make even less sense than Hayden. We already have to wonder why Luke didn't frown and say, "Who the hell is that guy?" So let's just stick in Qui-Gon Jinn, someone Luke has never seen or, in fact, never even heard of. There's absolutely no Luke/Qui-Gon connection, so there's even less reason for him to be there than Hayden.