Well, after perusing (admittedly, it's only been a once over) I am pleased.
Not necessarily for the reasons most would be.
It appears that DA are quite like CSM.
The costs, power levels, and synergies may very well pan out to be similar.
It is apparent where they went to effort to make the 'dex relatively unique, AND complimentary to allied contigents/allies.
Some of the equipment synergies are very nice, and actually appropriately costed.
They 'heavy' command units cannot be made troops, so if you want that FNP Deathwing squad you give up hefty points AND a troops slot (things follow that trend).
Flakk missiles for MSU Tacticals was a good thought, and allows a 'cheap' flakk option for allies...good application there.
Though punishing to the individual book, I also think they're getting their flyer costs on par with where they should be. It may hurt me from one perspective, but overall it is healthier for the hobby.
From an internal AND external balancing point, I have to give thumbs up to the DA book. (additionally, it appears that the book won't immediately invalidate CSM as the given 6e trend...in fact, if the 6e arsenal continues in this direction I can see CSM maintaining validity until much later in the current cycle).
A far more thorough review will be forthcoming, but these are my initial thoughts. Much reading (at the cost of work I am doing as well) will be going on today.
If anyone has questions, post 'em here and I'll answer as I can get to them.