It is pretty bizarre. I'm going a bit outside the lines I originally set for the series by using the hexapodal alternative evolution idea, but actually it isn't any wilder than a proto-civilization of sentient prehistoric cats. I've been wanting to do the speculative evolution thing for a while, and this gave me the chance.
BTW, I expanded Click's role, since you guys like her. I think she's pretty neat, myself. Given six-legged ancestors, a felinoid with wings is a reasonable possiblilty.