True, since Zorafan's have less "face" room to work with, it's harder to tell the expression, but even with yours Taka it's difficult to differentiate between some of them at first glance. For instance, I'm running at 1280x1024 resolution, and if I were to merely glance at these four:
I would be unable to easily tell which one is being used, especially with the last three.
They're still good, and I can tell you spent a while making them, but I don't think they're the perfect solution.