RfC for language feature: rvalue struct

[TheZipCreator]

On Wednesday, 25 January 2023 at 16:23:51 UTC, FeepingCreature 
wrote:
> Before I take on the effort of writing up and submitting a DIP, 
> let me solicit feedback and see if anyone can see a reason why 
> this idea is dumb and doesn't work.
>
> [...]

I mean, couldn't you just do this?

```d
struct Foo {
immutable:
	int bar;
	int[] baz;
}
```

Unless I'm missing something, I don't really see why an entirely 
new language construct is required.