This is... Interesting. The main reason DOs have to do interviews, however, is for accountability; our recorders save directly into the server; can be retrieved at any time, and so on. It'd be remarkably easy for someone using a normal one to edit the logs. Observation could be useful; if the IAA could be trusted OOCly not to lie; to cause more issues for a disliked character.
The DOs were set up with the intention that their every interaction and action was tracked and recorded; to ensure that afyer an investigation; a player can't try and poke holes in a legitimate case to get a character off; and to make sure that every investigation is completed properly.
Thosr regulations are what make DOs so slow. We can't do anything on Nuke, Revs, Mutiny; we can't interview antags or when antags are reasonably active. The interviews can take an hour or more of on-station time; during which, any number of factors could interrupt the interview, or cause the DOs to have to flee to Odin. Every person related to a case needs to be interviewed, regardless of timezone related to the DO.
These are what need sorting; if you want the DO corps to work better; which I am in the process of doing, and I would appreciate any assistance; and for IAAs not to add more and more people to be interviewed for now.