Yes, people complain because we were told we would be receiving huge expansions on scale with SI, not some mini-questline.
Of course I'm buying it, it looks wonderful, I just don't care for being told something and it not happen.
No we weren't, we were told smaller than SI... Larger than Fallout 3.
10-20 hours could also just be the Dawnguard story, which would match it to Shivering Isles, there's still a lot of unknowns. I have a really hard time believing Bethesda isn't adding any more land to the game besides the Soul Cairn. Some of the screenshots show landmarks not present in Skyrim. http://images.g4tv.com/rimg_606x0/ImageDb3/300177_l/e3-2012-skyrim-dawnguard-screenshots.jpg in particular shows what appears to be a new region in the west. This
could just be a distance shot of Eastmarch, but I don't see Windhelm, the Velothi Mountains are too small, and I don't see the Bonestrewn crest. Given that the sun is either Rising or Setting here, it either has to be looking out West or East, and there's no way this area is The Reach.