I don't advocate killing anyone just yet. My preferred approach is more like "transhumanism, merging utility functions, worldwide cooperation, singleton entity,

I don't advocate killing anyone just yet. My preferred approach is more like "transhumanism, merging utility functions, worldwide cooperation, singleton entity, reshaping the world with infinite care". The eventual solution could be as mild as ecosystem redesign, or as extreme as moving all life into simulations. Whatever maximizes humanity's utility function, which I don't claim to understand yet.