One of the major things will be the tooling around it. As we work with a well defined schema. we can create tools that work for all implementations.

e.g. see this CLI tool for managing proto.actor systems live: https://asciinema.org/a/a1b18jiv703e6eog1o2b7domi

You will be able to send messages to actors, connect to remote nodes etc.

There are also very fine-grained interception points allowing us to plug in things like zipkin.io w/o altering how the user writes their code.