For the benefit of those who are PowerPoint-challenged (OpenOffice will help with that), but also for the rest of us, I thought I might put up the one image that, next to the high-res Willosaur, struck me the deepest: cut from the one slide that showed a prototype of the creature editor, I give you --
functional parts!

Most of these were pretty easy to make out even in the blurry shots and the old video, but confirmed here we see for the first time that there is, indeed, a Sensory Organ catch-all category with an Antenna for an icon, and a general Mouth category as previously guessed at on SporeWiki. What is the triangular-ish one? Let the brainstorming commence!
Personally, though I have said it might be fins or flippers before, I must admit that it looks like it could be a natural weapons category, symbolized by a Spike. Your thoughts are asked for!