There's quite a lot of details that go into something like that and it's often not possible for the code to know all of them. Languages will sometimes abstract similar things out (e.g. have a function call run on some other processor across a network/bus and get the results), but it's quite a high level feature.
Systems programmers tend to demand a lot of visibility into what, when and how every line of code executes instead of abstracting that behind the language runtime. For example, a systems programmer might care that the data being received is transferred over DMA with zero copy.
As for features, honestly getting placement new without pointer shenanigans would be nice. C, C++ and Rust all make that (somewhat niche) use case more verbose and obtuse than it strictly has to be.
Systems programmers tend to demand a lot of visibility into what, when and how every line of code executes instead of abstracting that behind the language runtime. For example, a systems programmer might care that the data being received is transferred over DMA with zero copy.
As for features, honestly getting placement new without pointer shenanigans would be nice. C, C++ and Rust all make that (somewhat niche) use case more verbose and obtuse than it strictly has to be.