I really like the new design, but I'm still hoping for better discovery of bangs. Perhaps DDG could include links to suggested bangs alongside Images and Videos based on the search term. With the final link being a dropdown of all other available bangs (sorted by potential relevance maybe). Another possibility would be to include the list of bangs (or a shortened one) in the pull out side menu. For me, bangs are one of the best features of DDG, and it's disappointing that they aren't more discoverable.
