I think if this were the case, we would have quickly moved on from storing source code as text, and begun storing it as ASTs which could be 'viewed' in any localised version of the programming language. This may have had wider benefits than just reading source code in your preferred language.
You can serialize ASTs very easily as S-expressions, or slightly fancier versions thereof. That's still "text" and quite easily readable by humans, but somewhat less oriented to direct editing.
I would love for the block delimiters to be also a preference, like the language in that world. I'd edit every language with Python style blocks.