For various reasons, doing anything like that in any browser is nearly impossible. One major obstacle is that CDN content cannot be cached cross-site anymore (b

For various reasons, doing anything like that in any browser is nearly impossible. One major obstacle is that CDN content cannot be cached cross-site anymore (by design, for security reasons) in any browser, and it would be a hard sell to compromise that anti-fingerprinting measure just to optimize load time for specific first-party WebAssembly code.