> regional locale detection and user choice to make fake names

Presumably you're talking about locale detection of the hiring company/reviewer rather than locale detection of the CV submitter.

I really like the idea, although practically it's probably not a good one in small companies where people are likely to actually work with the person whose CV they're reviewing.

I would say stick to placeholders that are obviously placeholders in order to avoid confusion. And obviously there are some people who do need to see the real names, so give them a clear deanonymise step.