The thing is, if you can get a guy like Jack Bird in your squad, playing with a guy like Ponga behind a pack with the Saifitis leading it in a few years... maybe some of McGuigans "magic" might start brewing on the field. There's at least some ingredients there. I think Bird playing Lock could be a genuine point of difference for the team, if anything. The trick with the ballplaying Lock is not having too many cooks. I think if you can get the harmony right with the spine then it can still work fine. They need to be good defenders, and any go forward you can get is a plus. Not sure how Jack Birds knees (i think it's his knees?) would hold up playing in the forwards, though. I suppose it wouldn't be much better at fullback given the amount of ground they cover in a match, and he wanted to play there at one point.
Brown does seem to be a bit of a fan of a more old school approach to footy. He tried to get Hodko playing both sides of the field when he got here, although I don't know how crash hot he is on that idea now that he knows it's illegal to run a wheelchair out on the field to get Hodko on the other side of the ball every play. You could also argue that he may have just wanted Mullen playing wider more often, too.
I dunno, at the end of the day I'd be happy enough with 7. Lamb/Cogger 6. Bird too. Banking on both Lamb AND Cogger being competent first graders is playing things pretty loose anyway. It's an interesting discussion to have, at the end of the day wouldn't it be a nice headache to have to find a spot for Jack Bird to play in the team?