I agree with others regarding Olynyk's "instinct" (though I don't think that will change), Bradley's offensive ups and down (same), and Turner's inconsistency. As a whole, though, I enjoy watching these guys play. I admit that I haven't given as much attention to newer additions like Thornton and Zeller, but (as a UNC fan, as unbiased as possible) I've always thought Zeller was solid, and Thornton seems to be pretty easy to manage - if he's hot, play him; if not, sit him back down.
I don't know... I am just hopeful the positive attitude and mental toughness I see is: 1) real, and 2) sustainable. I don't expect us to win beyond 30 games (I do think it's possible, but not probable). But I do hope we play hard most nights, and contest pretty often.