There is no reason why someone couldn't build a tool to send/receive binary responses and print them out as text. We have wireshark anyway. Just need a cli tran

There is no reason why someone couldn't build a tool to send/receive binary responses and print them out as text. We have wireshark anyway. Just need a cli translator or a program that lists all the possible valid inputs for a given connection state and lets you select one (and allows for raw input just in case you want to try and break something). For most cases you will probably be able to get the old HTTP protocol anyway. The only potential issue would be for people who are implementing the HTTP 2.0 protocol itself, just about everyone else in the world will be using a webserver or at least a library. In fact raising the bar to prevent people developing their own HTTP 2.0 implementations would probably be a good thing, it would cut down on the number bug riddled implementations. In any case I don't think it makes sense to slow down the whole internet just for a few developers. Binary could also see the possibility of hardware implementations. Think webserver on a chip.