[tarkaTheRotter]

First off, the most important thing for us is to keep the APIs simple, sane and consistent. We absolutely won't add anything in a rush, or if it means compromising that core principle. :)

There are various things I'd like to add - simple plugin modules for metrics (dropwizard or prometheus), security (probably pac4j) and typesafe session support (via lenses) are in there. A sane websocket api seems to be a popular request so we'll also probably look at that.

Async would probably be via coroutines as that seems to be the nicest option API-wise. If it did work out well then we could probably backport it and piggyback the sync api on top.

The serverless stuff is interesting as well, although that's more around the deployment tooling at the moment - we'll see what happens if Google and MS get involved, or how the tooling develops for things like terraform.

Other than that - we'll happily accept suggestions! :)