Yeah, I saw that textless version come up on Facebook and "neck fix" was part of the description. Someone's just taken the cover, removed the text and fixed the neck.
Look, there's nothing to worry about, neck-wise. Large traps, in a front-on (or from above) view, with the darkness of the cowl drowning out the shape of things, will basically remove the neck visually. It's an optical illusion.
But we're going to see the cowl in full-motion, at every angle, and with the lighting changing and playing on the surface of the sculpt as he movies. Those factors will remove the optical illusion.
That's why (apart from the fact that it's not Ben, which shouldn't make THAT much difference) the photos of the stuntman from SS don't have the same problem - the shots are all brightly lit and taken at different angles and stuff.
As for the bulkiness, I think we're stuck with it, but I think it'll look a lot better in motion.