Nothing. What exactly seperates Craig from B-list British actors like Rhys-Ifans and David Thewlis? Not a lot in my opinion.
Bond tends to avoid big name "A-Listers" (Brosnan and Moore probably had the highest established fame, and neither of them enjoyed anywhere near the true A List status before they became bond.
In a sense, I agree with your comments, there is little to seperate Craig from the likes of Ifans, and Layer Cake probably put them on a par notoriety wise, in the UK at least (this is all just my personal impression)
ultimatly, Jake Speed, I see where you're coming from. although I have been Sold on craig in areas you have clearly not, appart from one's reaction to his less than perfect appearence, his almost craggy "masculinity" (I use that as a quote, not an observation, as I have to admit I have yet to see Craig's presentation impress me as a benefit to his movies) he is still indeed on the hollywood "b" list.
... Just don't expect your argument to hold up after November 17th, cause whether he'd earned it or not, he will, quite litterally, be the most famous man in Cinema