Ref T13244. See PHI1055. (Earlier, see D20091 and PHI1047.) Previously, we expanded the Owners package autoreview rules from "Yes/No" to several "Review (Blocking) If Non-Owner Author Not Subscribed via Package" kinds of rules. The sky didn't fall and this feature didn't turn into "Herald-in-Owners", so I'm comfortable doing something similar to the "Audit" rules.
PHI1055 is a request for a way to configure slightly different audit behavior, and expanding the options seems like a good approach to satisfy the use case.
Prepare to add more options by moving everything into a class that defines all the behavior of different states, and converting the "0/1" boolean column to a text column.