1. Why is animation so important?
2. Not really much since I have been busy with other stuff in C2C. From what I gather making new animations are next to impossible and you have to use existing ones. This is why some units like the Giraffe look weird in the civpedia but normal in game.
Also Zoo Tycoon units being brand new meshes are not easy to covert either. Most animated units in the download section are either existing models with re-textured meshes or linking skeletons of existing units to new meshes.
I now how to do the first and that's how the current cheetah was made from a re-skinned Panther. This is why it looks deformed because it is on a body (mesh) that is not made for the fur (texture).
I won't say never but it is highly unlikely we will get any of these animals animated unless we get a very talented artist on the team who knows animations. Note I have animated in 3D art classes but I have no idea how to do it for Civ4. Which shows you how difficult it is. My hat is off to anyone in the modding community who has done it.