I could be mistaken, but I understood MP03 was designed by a 3rd designer, modified to MP03 by Kobayashi and then to MP11 by Hasui.
Okay, partly right (and partly backwards). Kobayashi designed the original MP Starscream. Kawamori modified the design to MP03 and MP11 modified back to Kobayashi's original design with at least heels, a larger head and the missile gimmick added. I assumed (given the timing the 3rd designer was Hasui).
http://www.tfw2005.com/boards/transf...v2-review.html