I don't think any language that's not well-established, let alone one that isn't stabilised yet, would have a strong selling point if what you're looking for right now is to write production code that you'll maintain for a decade or more to come (I mean, companies do use languages that aren't as established as C in production apps, including Zig, but that's certainly not for everyone).

But if you're open to learning languages for tinkering/education purposes, I would say that Zig has several significant "intrinsic" advantages compared to C.

* It's much more expressive (it's at least as expressive as C++), while still being a very simple language (you can learn it fully in a few days).

* Its cross-compilation tooling is something of a marvel.

* It offers not only spatial memory safety, but protection from other kinds of undefined behaviour, in the form of things like tagged unions.