In keeping with the theme of general goofiness of April 1, I've posted a page with some of my what-if doodles - "sketches" would probably be too kind a term for these scribblings...
http://www.dataviewbooks.com/what-if.html
So, if you (for some reason)_ wanted to enter an Argentine F5D, RAF RA-5C, "Raspberry Ripple" B-52 or other far-fetched project in your next contest, here's some reference material - I wouldn't count on it holding much weight though :-)
Chris