I strongly feel that Dreads and Lone Wolves should be run in pairs for max effectiveness.
I think that you should probably drop both of them and the skyclaws for a second unit of
TWC, and that you should drop the first unit to 4. This will give you two deathstars
MotW really is a waste of points for thunderwolves...especially on a Lord. He would need a really good roll to beat his base attacks...and he already has rending. I much prefer the Frost ax/storm shield combo. I also think they both need the wolf tooth necklace.
I'm also unclear as to why you don't have any special weapons on your
GH squads...for 5 points you can have two meltaguns. I think that the Drop pods are a poor choice for this list...rhinos are the same points.
Overall, I like the basis of this list and where you are going with it, but some of these choices just don't quite fit it,
IMO.