I'll live either way. It's a huge articulated G1 Superion made by people not trying to hit a $10 price point for WM. I refuse to nitpick.
I assume you'd want him smaller because rhinos and lions are smaller than F-15's...
I also picked up this kit to fill out my Herc...
http://www.shapeways.com/model/831561/echo-herc-v5-v3-owners-kit.html?li=productBox-search
it looks so amazing on Herc...I don't use the thigh missiles or drill though...
Also, I was more flush with cash and shelf space at the time. Now, I'm tending to be more picky with my TFs and Joes alike.