Thanks for sharing, very inspiring. I love Rust for parsing video game replays / save files. I've authored a Rocket League replay parser (boxcars) and an entire suite of web visualizations (via Webassembly) for EU4 called pdx.tools https://pdx.tools

It's not easy to work with proprietary formats, but they've both become pretty popular, so I would 100% recommend sinking more time into this project as long as it scratches your itch. Gamers are always looking for more stats and deeper insights