It would be so great if Sean got to work full time on hyper, but of course I understand that he is needed elsewhere at Mozilla and he's doing a great job with the time he has. I would hazard a guess that there are so many besides me waiting for the upcoming HTTP client/server improvements that it would probably not be the worst idea if Mozilla (or some other org betting on Rust) threw some money at it.
I'm extremely grateful to everyone working on Rust and its ecosystem (paid or otherwise) for the work that you do. It sure sounds cheesy, but after trying lots of stuff over the years, Rust feels like coming home. There, I said it. I'm pushing it at my employer, and for every piece of tooling or important crate that matures, it gets easier to evangelize.