I think it's easy to visualize what's needed. We need to end the shareholder corporation. It's the c corps that are literally destroying the planet. I'm not sure that this alone is enough, but it would be the biggest single improvement we could make.

C Corps literally cheat, lie and kill to the point of making the Earth uninhabitable in its cold-blooded battle for ever-increasing profits. We should also get rid of totalitarians who are controlling and profiting from fossil fuels as well.

We don't need to invent a whole new thing right now—we just need to remove the most deadly things.

Way back when, nobody could imagine a system without a pharaoh, either. ;-)