Difference being is that one could inject 103 <download Y> for any resource, not just web pages, amplifying the outgoing traffic. Plus content doesn't need to b

Difference being is that one could inject 103 <download Y> for any resource, not just web pages, amplifying the outgoing traffic. Plus content doesn't need to be modified. It would be nice (I haven't read the specs) if 103 was restricted to HTTPS only for example.