Just serving static files from Rust is not that interesting. It definitely does not sound easier to me, since you are coupling deployment of both BE and FE with no resource optimization to get. Also, since built SPAs are essentially static files, their deployment could be just uploading these files to your CDN.
Yes, frameworks like Dioxus (https://github.com/dioxuslabs/dioxus) implement next.js-like "fullstack" SPAs in Rust (the client-side code compiles to WASM).
> Rendering the HTML is performance-intensive in my experience, using Rust could save up quite some computational resources.
The server-side performance is indeed much better than JS alternatives (client-side performance is more or less the same).
The link to Leptos is https://github.com/leptos-rs/leptos for those who need it.
Your usecase can be useful for "local web applications" where you ship a binary and you get a local webui - but at that point, why not just build a Tauri app? (not electron as you would be shipping an extra browser instead of reusing the system one)
