Ah ok, yeah I'm game with importing values and perspectives, which as you state has already happened to a certain degree. It is a non-trivial process through, and I do believe we need to build up a new shared foundation, supporting layer, rituals, etc. that don't have the supernatural baggage.
It isn't possible without the 'supernatural baggage'. You need a basis for why humans are different, but if everything reduces to natural processes humans are fundamentally the same thing as everything else.