Hmm all the other Wildlife Protection Area's in OSM in NSW use protect_class=4 and that seems to align with other countries per https://wiki.openstreetmap.org/wiki/Key:protect_class although I understand these aren't IUCN assigned, so based on that could be protect_class=7. I don't mind either way so long as they have protection_title set, but maybe we should still use 4 to align globally despite the lack of IUCN?