Definitely! Though, for that maybe the exact number (average value of the species, not all crocodiles are exactly 4,2m) would be more appropriate than a class.
I guess that’s true. I just got mildly carried away. So perhaps we should ditch the “base” thing. But I really like the criteria you proposed for the civilization classes, sounds exciting! As mentioned before, this post served just as a proof of concept for someone to perhaps handle it better, as I was currently gathering information for this behemoth of a post.
I’d really love to see someone come up with a fleshed out system for organic/technological/sociological and-so-on classification, I think it would be really great to have something like that in the game.