I prefer the strategy of picking someone kind-of-well-known-but-not-really-oh-right-he-was-in-that-thing famous, rather than famous famous, which would be in line with earlier casting. This makes me hesitant to throw out any specific names. Much of it depends on what "kind" of Bond they want this time; after Craig's take, I personally think we're due for a turn to a "suave, but not campy" Bond, but I can't imagine what the Broccolis are thinking right now. I think, much like Batman casting, I'll have a moment of shock/surprise before I think about it and go, "Yeah, I can see it." For that reason I'm hesitant to remark on any of the suspects regularly bandied about so far. I kind of hope it's someone that hasn't been on anyone's radar yet (and--speaking as an American--not an American).
I do think a black Bond is inevitable (though maybe not right now, given various real-world reasons working against it that would probably violate board rules to get into). Elba has aged out of consideration by now ("black don't crack" not withstanding), though I could see Rege-Jean Page doing it; he's the right age range, has screen presence for days, plus I can picture him like Connery in Dr. No delivering "Bond. James Bond." with a heavy-lidded drawl.
But, again, I think it depends on what "version" of Bond they want this time (cold, thuggish, playful, camp, etc.). I want them to surprise me with someone I don't have set opinions about.