Cleanliness and tidiness are the first steps in efficient maintenance. If the a/c is kept in this manner then you can almost guarantee that the periodic maintenance schedules are observed. Cleaning the a/c with your nose six inches from it makes it difficult to overlook any snags.
I don't know of any issue in connection with group ownership that causes so much angst as that of failing to keep the a/c clean and tidy. There are members in most groups that will complete their sortie, park the a/c and walk away. Infuriating, when the next booking arrives on a tight slot, then has to strip a load of gooey bugs before starting pre start checks and departing.