I am curious how this would change with the multiplexed pipe of HTTP2 where doing a lot of requests is not as expensive. I did a couple little tests a while ago with nginx 1.9.1 mainline, and while the results did show a little performance improvements in figures, they weren't observable - but this could be because I didn't put in much care while doing those tests and I probably did some mistakes.

Anyone else has done good benchmarks on real world single-page-apps which do a lot of back-n-forth communication with the server with http2?

I don't expect things to get suddenly extremely better (specially since resource fetching is only one of the bottlenecks), but maybe it could bring a mid-way between the server vs client side rendering war.