This is really cool, I had a similar idea but didn't build it. I was also thinking a user could take these different prompts (I called them tasks) that anyone could create, and then connect them together like a node graph or visual programming interface, with some Chat-GPT middleware that resolves the outputs to inputs.
BTW: Here's a more performant version (fewer tokens) https://preview.promptjoy.com/apis/jNqCA2 that uses a smaller example but will still generate pretty good results.