Ah, got it. Well as far as I know, proto2 (with required) isn't going anywhere and Any can still be used with it. One nice thing about protobuf is its extensibi

Ah, got it. Well as far as I know, proto2 (with required) isn't going anywhere and Any can still be used with it. One nice thing about protobuf is its extensibility, so you can still get required fields with something like protoc-gen-validate, but interpret them closer to the app's logic. https://github.com/envoyproxy/protoc-gen-validate https://github.com/envoyproxy/protoc-gen-validate