Here's a really long remix of New Divide I made. https://soundcloud.com/the-almighty-potato/new-divide-long-trip-hop-remix
Would be way better as an original with a tighter arrangement and structure, IMO. And, even if it had to be a remix, I think that you still could've packed your best ideas into a 3-to-5-minute track.
Haven't remixed What I've Done yet, remixing that is basically like remixing New Divide :nokappaneededbecauseit'strue: