hi, have you met me?

I'm definitely on the side that it isn't any deficit in JF's acting abilities that lead to Sheppard's inscrutability. Having watched some of his other material, I think that's just the type of actor he is, which possibly reflects on the kind of man he is, and that in that respect he's perfectly cast for Sheppard. John isn't a character that wants/needs/doesn't mind other people seeing everything that's happening with him. I find him so interesting because often you don't know, although we do frequently get hints of fear, rage, genuine affection behind all that insincerety and irreverence. I find it intriguing, and it's lead to some wonderful extrapolations of his character/backstory in fanfic. So in that respect, I think I'd rather not know, because then the endless possibilities are cut away. But at the same time, I would dearly love to find out more about him, and see what JF could do with some quality material for him. I agree that it will be very interesting. From what I've read of spoilers, I'm hoping that we'll get to see something like that in a couple of months.