Deadly sins of the past come to roast is the theme with no ability to create scene by scene, in other words to plot the course. This is what your treatise suggests. But, hold on and consider the possibilities that we , our species, having as you state, run its course as far as the collective complexity requires a retooling. This might include a cleansing process that happens daily in nature. Somehow we, arrogant and self assured as we tend to be, believe that we are not destined like those natural creatures before us, to be extinct. Kaput. To be done with as before only to become something else in the future. No, not us, the species that you suggest ought not dream according to instincts but what is left when all else fails...be what the culture demands, not racist, nationalistic, greedy nor biased.
In other words, you wish us not to be naturally ourselves but another. An evolved other, a cultural puppet, ripe with affirmation from the herd.
Are you beyond yourself? Someplace akin to having the notion we as a species is any better because we think so.
Maybe the theme simply is what you can never comprehend. Could that be? And the plot acting upon that theme is beyond your control. And thus, why worry? Or ruminate about that which is beyond your control unless.
Unless what, you are no doubt scratching your head in unison with. Unless you are a player in the plot already defined by nature and within the theme is you. The one who believes nature has no place when humans are concerned. We are beyond that joint of a place.
The Earth will be far better off without us. That is the truth. So what becomes of that reality? Alas, the plot unfolds. The truth be known. And the protagonist prevails. The question is who or what is the protagonist. And who or what the antagonist. Sins are a man's construct. Deadly sins, simply a man on his mission, naturally so.
Eric