Art Direction, assets, and concepts

So, as the graphic thread seems to have died, I wanted to put up a new thread, concerning the art direction that should be taken when non-hexagon mode is implemented.
As I understand it, many more organelles need to be implemented, and some variety given to the movement modes provided. For instance, I would love to play as an amoeba, but there are no psuedopods or even much of a flexible membrane yet. Are cilia an option, etc? Will there be other aggression options aside from simply trying to poison other microbes?

At a different note, how detailed are the environments in microbe stage going to be? Are there going to be non-microbe entities, i.e flotsam, dirt, or pollen? What sort of art direction is planned? I understand that eyes and Spore-ish cartoony designs are out, but how much detailed realism do we want to add, because much of what is seen by microscope is just small spheres and squiggles.

I know these are all questions that have probably been answered at some time somewhere, but I am immensely new to this site(and forums in general really) and I have no experience as to which questions already have answers and concepts attached to them, and which do not.