Okay, picked up the issue. Have read it three times. Still can't make head nor tails of it.
1. Possibly the lowest panel count in a Marvel comic ever? At 62 panels of story (by contrast Thunderstrike #3 had 104 panels). I think Nextwave Issue #11 may have had fewer with its 6 consecutive double page spreads (though that comic was an ironic dissection of the superhero genre...and pretty good). Here we just get so many big panels that there is very little contrast to anything.
2. "Blood Legion": Okay, none of this is sufficiently explained, but I'll give Fraction the benefit of the doubt and say that maybe the Asgardians (indeed all the denizens of the nine worlds) are turning into a bunch of mini-Mokkurkalves. Why the Asgardians, Trolls, Giants and Dark Elves didn't just fight the World Eaters is totally lost on me.
3. The Villains: Quite possibly the lamest bunch of faceless (in terms of personality at least) mooks ever. Uthana Thoth has done nothing so far and does nothing again in this issue.
4. The Scale: Terrible. It looks like about 8 Blood Colossi vs. about a hundred or so World Eaters.
5. The Action: Has Fraction ever read a Thor comic? Has he seen one of Odin's fights? Comparing this to something like Odin vs. Thanos is just laughable.
6. Continuity: Not a massive stickler for it, but since when was the Odinsword reforged?
Then again the whole thing has made zero sense from the beginning and been totally out of character all along so why change now. If the threat was so bad, why not stick Thor in the Destroyer Armour while Odin grows to his Giant size and takes up the Odinsword...?