Wait, what do you have against six-limbed dragons?
Two things, actually. Firstly, and this is just a minor point, all vertebrates everywhere ever are four-limbed. But it's a fantasy creature, so whatever.
More importantly, I dislike them because they're never ever done
right. They're always bulky and heavy, very obviously designed as quadrupedal land animals that got a pair of wings attached to the back as an afterthrought. They just don't look believable. The wings are always
way too small to generage enough lift to hold the massive animal aloft, and there's never any supporting structure for them. The wing limb itself is always too thin and usually isn't supported by anything. An extra pair of forelimbs would mean an extra pair of pecs and shoulder blades, which you never ever see. Take a look at this one:
http://www.sff.net/people/laresnick/Clip%20Art/red-dragon.jpg That's actually one of the better ones, but even in this example the wings are way too close to the front legs to be able to actually move properly. And while they do have some muscle on them, it's nowhere near enough, they're thinner than even the front legs. It takes those four massive, pillar-like legs to hold the bulk of the animal, but only a pair of much thinner wing limbs can accomplish the same task? I just can't suspend my disbelief at the sight of that.
Now I do realize even four-limbed dragons wouldn't actually be able to fly, but they're at least a bit more plausible.
Also, one of those scans shows skills, and alteration is still in along with the rest of the magic skills from Oblivion (destruction, illusion, conjuration, alchemy, and restoration). And a new "enchanting" skill it looks like. The one on the far right is hard to see, but it looks like it begins with "staf".
Aw crud. So basically the "mysticism is gone" thing should've been more like "mysticism's been renamed to enchanting". That's brilliant.