The repository is open source, so you can contribute if you feel inclined.

https://github.com/SeanHollen/1300-2000

I like how your project has such a long time horizon, I'm glad you're showing it.

Another project in a similar vein that might influence you is the historical tech tree. https://www.historicaltechtree.com/ It has literally thousands of technologies all mapped together. I was curious so I calculated the most "influential" technologies: https://github.com/etiennefd/hhr-tech-tree/issues/12