Well...
Well, the drawings weren't too bad, although there are a few problems. First, there are too many trailers now-a-days and not nearly as many truly full length animations. Second, over usage of songs such as "O Fortuna" really take away the emphasis on the animations the creators are striving for. Thirdly, and obviously, originality and the lack thereof.
Was this death? What is it? If you're tryiing for the "unknown threat" approach; it's become an obsolete idea which is now typically disregarded.
Hope to see a future animation soley from your creativity.