Something I have been trying to arrange for several years and failing: I would write a simulation in order to adequately explain a mental model I have for how to get healthier in the face of chronic illness. Getting healthier is something I have actually done. It takes most of my time and has left no time for learning to write code. I have a design doc and one developer friend who takes me seriously and I still have a lot of personal barriers to making this a reality. I know one woman who is following some of my advice and getting healthier. I know this works and it is mostly too hard to explain with just words. I need to write a simulation in order be able to effectively convey the mental model. If a picture is worth a thousand words, I need something far more information dense than that. It takes too long to convey any other way.
I don't know if there is anything you could do to help me make this happen. I first need to get off the street. Then I can focus more on work like this. But that is what I would do and something I think would make a big difference in the world.
I have been trying to come up with thoughts on what you could do, which is really what you want to know, and coming up blank, in part because I don't know you well enough to know where your niche appropriately is.
Best of luck.