@drq @mo @BigFoxBoss The MAIN issue is AP/AS spec because it was developed for XML originally, but was migrated to json-ld in fast and incorrect way.. Now we have what we have...
Also many other languages with KV and array semantics just repeats same key multiple times to send array, which allows to turn any key to array keeping compatibility. For example, TLV format in Russian fiscal storage protocol, XML tags, MPD protocol... But virgin json does not allow this.