If the MAA demanded that the cabin carpets be hoovered in flight and required a "Flight Cleaner" as part of every crew then that Cleaner would be Aircrew; headscarf, drooping fag, Nora Batty stockings, and all. Aircrew isn't a status, it's a description, and RAF Aircrew are identified by the wearing of a Brevet. So give CC a Brevet.
So part of my job used to involve carrying out airtests on Chinooks, therefore as an Enginner required to fly on airtests and carry out adjustments etc, would you then award them a Brevet too? I seem to remember that flying pay was granted.