I have noticed that when a DOff Assignment comes back as a Critical Failure the mission does not appear in the Completed Missions list on the DOff UI. Instead you are simply told through the chat system (System chat channel) and none of the specifics are displayed.
This is a problem because without showing us the specifics we have no idea which DOff or DOffs were injured or more importantly died on the mission. We can't possibly be expected to remember every officer we've sent on assignment and which assignment they were sent on. Even the Captains had PADDs to help them keep track of these things.