Developed an advanced load balancing feature for the grpc/grpc-go repository, focusing on enhancing flexibility and accuracy in gRPC-based service distribution. The work centered on introducing experimental APIs that expose endpoint weight and hostname attributes, enabling custom balancer implementations to leverage these details for improved load distribution strategies. Implemented in Go, the solution involved designing new public API surfaces under the balancer package, supporting advanced policies such as deterministic aperture and P2C. The developer ensured comprehensive documentation and release notes, collaborating upstream to facilitate broader adoption and maintainability within the Go ecosystem. No major bug fixes were addressed during this period.