Besides possible interpretation issues (with the text of TFA), what is so great about something like that? The whole idea of the web is: the client decides how it renders the data. If we targeted a remote hosted bit mapped graphics terminal with a VNC like sharing protocol then the web would have never taken off. But of course, the last line of defense in undoing the web is to host VMs running your application and just sending over the bitmaps.

In the end this may be inevitable but I'll stick to HTTP as long as it is feasible. These 'improvements' are a step back. More bandwidth to mobile would be an improvement, as would be a mobile infrastructure without silly caps (you know, like we had 5 years ago).

SPDY proxy is there since a long time: http://www.igvita.com/2012/06/25/spdy-and-secure-proxy-suppo... (you have to run your own proxy though).

The major benefits would come from mitigating the (generally) higher latencies and lower bandwidth of mobile. What gains you'd get on desktop would be countered by the extra hop traffic would require. Overall I doubt desktop users would get much benefit from this feature.