Host Serialize and Deserialize instances not so useful?

From looking at the code it seems that the serde Serialize and Desirialize instances for Host are automatically derived, meaning that the resulting behaviour is perhaps less useful, as the enum is tagged with its name, for example

#[derive(Serialize)]
struct MyStruct {
    host: Host 
}

fn main() {
    let foo = MyStruct {
        host: Host::parse("www.google.com").unwrap()
    };
    println!("{}", serde_json::to_string(&foo).unwrap());
}

Produces

{"host":{"Domain":"www.google.com"}}

I feel that having these instances spit out the host in question without the enum tag would probably be more intuitive and useful to end users as right now things are coupled to the implementation details of Host, what do people think?

Locate the Host serde Serialize and Deserialize implementations or derives, then reproduce the issue's serde_json example. The proposed representation is not decided in the discussion, so first get maintainer agreement on the wire format; done means the agreed behavior is implemented and covered by serialization tests.