What would you like to be added:
The ability for the user to specify the load balancing policy/algorithms used when load balancing requests from the gateway to the upstream / backend.

Why this is needed:
To improve performance/throughput in production.

Examples in Data Plane

• Envoy - https://www.envoyproxy.io/docs/envoy/latest/intro/arch_overview/upstream/load_balancing/load_balancers
• NGINX - https://nginx.org/en/docs/http/load_balancing.html

Examples in Control Plane

• Contour - https://projectcontour.io/docs/v1.10.0/config/request-routing/#load-balancing-strategy
• Istio - https://istio.io/latest/docs/reference/config/networking/destination-rule/#LoadBalancerSettings