Unity’s scene format is implemented with the YAML data serialization language - latest release 2009. Are there plans to change this in the future, e.g. to JSON? I prefer YAML. What would you prefer?
The change seems like a lot of wok for no real benefit. I don't expect anyone to propose it anytime soon. Doesn't everybody? Sometimes its just more convenient to edit the scene directly.
What's the point of changing the scene format? If they were to change scene format into JSON, they would have to: Have their built-in serialiser work with JSON (read write) Make a converter for XAML to JSON. On top of that, it's gonna be backwards incompatible with previous versions of Unity (unless JSON to XAML converter is made). That doesn't include time spent on testing everything! An opportunity cost would be shipping new features