Oh! Well, I guess there is a little confusion. Yes, I definitely feel that the rubber-suit aesthetic is important to making this game as thematically "kaiju" as possible. I was under the impression that humanoid monsters were simply easier to program. Goes to show that I'm still learning things about the programming side of things every day. Then again, Simon may have told me that and I was in the middle of a food-deprived coma

The problem with making a kaiju is that it's very easy to LOSE that kaiju-centric design sense, especially with the sense of scale. Thanatorg is a good example of a creature that, had I pushed the humanoid/armored/weaponized elements any further, it would be easy to mistake as something totally human sized.
Still, a large part of what goes in to our monsters is based on the desires of the contributors and the core concepts for each character. People simply want bipedal kaiju because it's intuitively easier to relate to. Same reason we don't really have any bug monsters yet.