Not convinced that this a better solution then just implementing these features as part of the protocol. For example, most languages have libraries that support

Not convinced that this a better solution then just implementing these features as part of the protocol. For example, most languages have libraries that support grpc load balancing. https://github.com/grpc/proposal/blob/master/A27-xds-global-load-balancing.md https://github.com/grpc/proposal/blob/master/A27-xds-global-...