Besides what the other commenters already responded, APIs don't just fall from the sky over night. And especially the APIs that you refer to, are just not trivi

Besides what the other commenters already responded, APIs don't just fall from the sky over night. And especially the APIs that you refer to, are just not trivial to write at all. Just because add-on developers yearn for super powers, doesn't mean that Mozilla can provide this as quickly as lesser super powers.