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Rust is a low level language no matter how productive it may be.

The memory layout will simply leak into the program architecture and will have to be altered on refactors — something which is transparent with managed languages.

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What do you mean here by memory layout? For instance, the order of fields in a rust struct can (theoretically) change by recompiling. It's not defined by the order of fields in the definition.

Unless you add a repr(C) attribute for C interop.

On a language level, high level APIs will necessarily contain details to things like (mut) reference, Box whatever. Which is not a problem at all, given the problem domain, but in my opinion it is not possible to make a both low and high level language at the same time (and it is not really needed either)

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