In general I agree that we should mention heritage and I'm fine mentioning functional programming but I don't think that what we're doing actually is super-functional.  More specifically I think that this is largely a library for list processing.  LISt Processing obviously has some strong roots in functional languages but the only essential attribute is the use of functions as first class objects.

I think a general difference between how we view this project is that you're maybe aiming it towards the Clojure community while I'm aiming it towards the Scientific Python community.  To you functional programming is a selling point while to me it's something I want to hide under a rug until people are comfortable.