Thanks Phil, that is an interesting read. And it also sounds like quite a can of worms!
I agree that text defaults would be bad for content editors who want to use live preview, so I can understand that isn’t something that would be implemented.
However, default labels (which is my use-case specifically) seems fairly innocuous - though maybe that would lead down a slippery slope of “I can have a default label, why not default text?”
What do you think about maximum and minimum length warnings? Something like the UI being orange around a field, or something. That could be used to indicate fields that probably should be default. (And provide guidance for SEO fields).
I suppose it’s a case of me thinking I have a perfectly reasonable use-case - I’m not going to smack ‘required’ on every single field - but once it is possible, people will, and that will be nasty.