We started using it for the salticids in the “undescribed salticidae of NZ” project. In most cases the key is the first observation number and for a couple of them we have descriptive keys (eg “Rock salticid” I think, I’ll double check that when on pc). I have been wanting to tidy it up by making them all descriptive keys, but it would take discussion with all interested parties to do so. Kate I think is working up to doing a revision, I think Shaun has an interest too… It’s been on the “above my pay grade” wish list for a while :)
As for splitting off to another field, that can happen too… We already have this one and Tony’s original one… “Observation group”. I know of situations where both can be utilised, eg to follow an individual as well as have it grouped with the similar unknowns. It could conceivably made into a “set of set fields”, eg “lifecycle study” and “year in the life of”, although these are starting to get into the realm of project level treatment.