I can promise I’ve never recommended that one of my enterprise customers (who pay well over $200 a month) use Railgun to achieve similar benefits to HTTP/2.
It’s something we’ve discussed adding and it is in our backlog. But remember our reverse proxy isn’t a browser or a single machine. So our behavior in a lot of cases is optimized in ways which are fundamentally different than what you would do for a single user browser session. In reviewing the highlighted use cases for this in our backlog none of them were end user browser related.
I’m sure the functionality will probably be added at some point.