Wow, I'm really excited for this! I'm actually currently rendering a MapLibre-based web map of some drone orthomosaics I've built on my personal site[1], which is using Rust on the backend to dynamically assemble the Javascript code running on the page for each new dataset.
It's not the prettiest, and writing the initial Javascript code is that I'm using as the template for adding data is kind of a pain, so possibly being able to write the entire application in native Rust would be really awesome.