Nice suite of tools. The eBPF based ones look promising.

Not really Rust specific, this might be an interesting way to structure your code once async gets introduced. Should avoid some of the usual traps.

As Moore's law fades away this question is indeed essential. Looks like there will be more pressure on software and algorithms than before (at last one might say, we had decades of waste there). Streamlining hardware architectures will have a role too, we might see simpler cores in greater numbers.