Yes, but some of the things that cause issues e.g. eager loading of JS and images are the result of internal priorities in the browser What if instead of forci

Yes, but some of the things that cause issues e.g. eager loading of JS and images are the result of internal priorities in the browser What if instead of forcing sites to re-implement themselves using a set of custom JavaScript components they actually changed they way browsers behaved e.g. via meta tag / header etc.?