It would be useful for an operational mode, once activated, to automatically deactivate after a configurable amount of time has passed. It probably makes the most sense to pass a parameter with the EnableOperationalModes instruction like Timeout = 60s to include the expiration time (or require a date-time string). Then the node could keep track and automatically disable the mode(s) appropriately. If no timeout is provided, it would work the same as today and never automatically expire.

If another EnableOperationalModes instruction was issued with a new timeout, the new timeout would replace any existing timeout value.