CTR:
To me, ‘natural’ and ‘hierarchy’ are two mutually exclusive terms. I don’t see anything organized hierarchically in nature. Maybe I’m not seeing how you’re framing your question. I really see a wide world of cooperation and collaboration, and I think humans do better when the social systems allow us to do the same. In which case, there are cultural values that human communities can prioritize which will help them survive longer (such as collaboration and cooperation).
If I’m understanding correctly your analysis, I think that Christianity was lost since Constantine adopted it as the official religion of the Roman Empire. At which point, Christianity became an apologist for violence and coercion. Sure, you can still get some loving Christians - but when the choice is ‘convert to Christianity and join us OR die’, that’s a huge betrayal of Christian values.
In terms of clothes, well, I live in the sub-Arctic and I like my warm winter clothes. You go ahead and take yours off if you like, I won’t stop you. 
Other than child-bearing, as far as I am aware, there is no sex-specific behavioural trait that is universal among humans. Which is to say: somewhere on the planet, anything someone has declared ‘naturally male’ or ‘naturally female’ is disproven because someone from the opposite sex will do it.
Ernesto!
I think you’re on the right track, so to speak, and I think that we WILL organize unofficially and organically because how else can we do it?
Where I disagree with you is allowing any common ideals or morals to be ‘developed’ by anyone. We’re all good people, our values and ideals are already bringing us here, we’ll figure out how to make decisions together when we need to. Right now it all feels pretty theoretical & abstract; I don’t see a lot of decision-making going on in this group.
And as far as ‘weeding people out’, mmmmmm, sounds like you’re into setting up an elite group right there. You go right ahead, mate! I don’t think I’d pass your test (I’m likely too old and not impressed enough with young men) and the most capable bush-women I know are older as well. For myself, I think I’m going to just swim with the plebes and do my best to contribute to my community’s well-being for the long term.
Yah, I agree with you that natural life steers people towards the role that they’re best suited for. That’s the reason I think avoiding rigid gender roles contributes more towards any community’s long-term survivability than any other set-up.