I'd have no qualms about buying it as for all it's flaws it's still (potentially) the best film I've seen in a long time, however, if it includes a deleted scenes package then that is something I really don't want to see if it's stuff that would be better placed within the film.
I mean, if a Director's cut came out six months later, I don't want to have seen all the new stuff already, but out of context. Made that mistake with the spoiler heavy trailers.