I usually have better luck at the small end of the scale, little balls and planets, close-up surfaces, and things like that. Get it scaled up a few thousand times, maybe swap the cells for a Perlin noise and stick it on the sky, or the sea, or anything else you can imagine...
I animated a pyramid from a bevelled simple shape shader last night and yes, you can use the colour/edge colours to scale the function by, too, doesn't need to be a fractal input...