I hate Don't Panic but still feel compelled to enter. I guess it's just nice to have a brief and a deadline, and the vague possibility of success if you know enough people. I set myself a time limit of one hour for this design, and almost made it. (Submitting took about three). Clearly it's not overthunk, and probably benefits from that.
You can still vote for it if you're so inclined. So far I'm on three votes, all of them from me, so it would probably help me out.