[divbzero]

There are libraries [1] that achieve what you describe.

[1]: http://instantclick.io/ "InstantClick"

[earthboundkid]

Yes, TurboLinks is another library that does this: https://github.com/turbolinks/turbolinks

[Town0]

Yes and I'd describe them as unpopular hacks. Http2 push is not a hack.

[ioquatix]

Actually... I've implemented both client and server side HTTP/2 push and I'd say... it's a hack and we should deprecate it and remove it from the spec.