I would not touch Go, thanks. Either Rust or C# would be much easier in terms of vertical scaling strategy to reduce replica count and increase individual pod

I would not touch Go, thanks. Either Rust or C# would be much easier in terms of vertical scaling strategy to reduce replica count and increase individual pod utilization - both languages offer better tools for scaling on individual many-core instances, reaching much higher throughput. Edit: (though in wider context naturally the switch away from existing stack in a company would never make sense as long as it is a compiled language with sufficiently good average performance)