I have a feeling QOS will be disappointing mostly because of Forster's insistence in making it as short as possible, which will in essence mean missing plot points in favour of action sequences. I find interesting that he refers to the film as an action film, whereas Campbell didn't. It tells me something among the lines of this guy took the job because Sony asked him but wasn't that interested in it, has a very narrow perception of what Bonds are and can be (Bonds aren't merely "action" films) and I for one I'm glad he won't be coming back for 23. As for Sony, they strike me as interfering more with films than MGM.
When I interviewed the guy a couple months ago, he only referred to it as an art film, saying he told the producers he only knew how to make his kind of film. If he is calling it action now, maybe it is in response to questions framing it as such?
He took the job because his longtime associates (cinematographer especially) were over the roof with excitement over the idea, and so it (and I guess the producers) grew on him.
The addition of a second editor on this film, someone who isn't from the director's group, is the only real flag I can see. Certainly the early response is mixed.