The book that allows multiple enemies to be hit with a power attack is awesome. Feels so good to knock back multiple guys with one well timed power attack....
In regards to the loot container change:
Keep in mind the new auto chunk reset feature. Busy servers will definitely want to use this feature so areas that are not visited frequently can reset which means new unlootable birds nests, etc.
With the destroy/convert on loot feature, now you won't have to waste time opening containers others have already looted.