With the exception of navigation waypoints, none of the things you listed would actually change AFAICT. If the industry as a whole refuses to take measures who

With the exception of navigation waypoints, none of the things you listed would actually change AFAICT. If the industry as a whole refuses to take measures whose only impact is to drastically improve its efficiency, that would be a net negative for everyone except jet fuel sellers. In a competitive environment, such bloat would soon die. But given the level of international regulation that (I assume) exists around air travel, it might linger indefinitely.