You're still not getting it, but I'm sure you will as soon as you take a look at what the MMU2 (and Palette 2) can do. To be clear, the pieces don't need to be separate pieces in order to be printed in different colors. His legs can be one piece in the final print, and still be printed in separate colors, so long as the object itself is in two (connected) pieces/parts.
If you're willing, why not upload your .ipt file to the thing files? That way, people can remix and improve your excellent work, not only for multicolor printing, but also for tolerances and maybe even more articulation. The one I printed (at 750%) was VERY loose. The head won't even stay in.