> MAML will also have to reference JSON implementations to resolve ambiguities, e.g. how to handle multiple identical array keys

Isn’t the spec (https://maml.dev/spec/v0.1), which says “Duplicate keys are not allowed within an object.” sufficient for that?

Or am I misunderstanding what you mean by “array keys”?

It seems the spec is silent on whether key order is significant in dictionaries, though.