I've been waiting to see this for a while, because this is intrinsically about extending the service mesh to end devices. Unfortunately it does seem to be more protobuf / gRPC specific then I would like at the moment, but device connectivity is absolutely something that should be managed as a separate concern from core application development.
While we see a lot of potential in protobuf-based interfaces, rest assured that this is fully-intended to be a general-use networking library. (Lyft employee/project contributor here.)
