I already know most of this stuff and even studied it. Terra Preta, IMOs, agroforestry, alt/free energy, alt. construction materials, CSAs and so on. But most of this is utopical on a global scale from my point of view. I could write many pages about it, but I will give you some examplary thoughts only. Terra Preta (e.g.) is too expensive: even with 3% biochar only and 10l TP soil per m² only it would cost 2,5-3000 €/$ to enrich a whole hectare with it. - Biomass, Basalt/ Diabas powder, composting, earthworms. processing, machines etc. not included. That's economically not senseful. And also not socially. A small incline of the world market prices for wheat or corn will kill hundred thousands of people in developing countries because they cannot afford it any more. These methods may make sense on a small scale, but we need the big production to go on at low cost or people will starve and die due to the change process.
We are somehow dependent on existing systems. Same with "free energy": Let's say you invent a simple device which everybody can build, delivering 20KW at the size of a beer box and you make the patent open source. What happens then? -Stock markets will crash, because many investments in energy production and distribution, which are long-term, will be devaluated and have to be written off. Oil prices (and transport, food, etc.) explode first and then later crash. Market psychology. This will make millions unemployed: Starvation and death among the poorest again. Copper and electronics prices will explode, too (electric motors). And a hunt for other natural resouces will begin, as energy becomes cheap. The capital will seek other ways to keep the value: Minerals, timber, irrigation agriculture (salination), chemical industry -all bad things for the environment. (An elecric chainsaw is cheap as hell ...) The Automotive Industry invested a lot into Lithium - also huge writeoffs. New companies will have less workers, more robots. -unemployment. Major disruptions, crime, run for new resources.
I could go on and on.
These are just two examples, but I hope you got a clue what I mean.
Such a change process must be managed carefully. And this needs a soft change of the existing very strong and resilient and very powerful structures and also change within the mindset of many people first.
Your freedom begins, where my freedom is limited and I have to accept it.
It has to start at industry, banking, military and government level. No secrets there. Limit of ownership/power for international cooperations. Freedom of speech, ownership and privacy for individuals at a senseful and healthy level. Total transparency and severe punishment of corruption for governments. Reduction of the competition for natural resouces. So many tasks to fulfill and utopias to reach ...
As long as children grow up in fear and pressure-driven societies, adults will always seek for a relief of that pressure and this often leads to violence and imbalance in the behavior and egocentric, fear-based decisions. A vicious circle. We have to break it.
But it is deeply inside us, implanted by our parents, religions, schools, politics, etc.
Freedom of and access to information and knowledge / education comes first, then understanding and hopefully positive change ...
Farsight is part of it.