As always with CBS, if it's not broken, don't fix it seems to be their modus operandi.
Cain gives them a chance to try and do the same thing, without changing anything else about their modus operandi.
Her modus operandi is not unlike that of a roving investigative journalist.
The way someone does something; a characteristic method: “Her modus operandi in buying a new car always included a month of research.” This phrase, often abbreviated “m.o.,” is used by police to describe a criminal's characteristic way of committing a crime. From Latin, meaning “method of operation.”