Like the 'specialized staff' concepts. Once upon a time, games used to have app staff, plot staff, theme staff, player relations staff, etc. I don't remember what the arguments were against it, but I remember it was widespread, and then it suddenly wasn't. Like, seemingly overnight that setup was abandoned in favor of more generalists.
There used to be a lot more people who were a) willing to staff, b) capable of doing it (proper mindset, personality, etc.) and c) had time to do it. Now there are less players overall, we're all getting older and having kids, working lots of hours at RL jobs. So those still willing, able, and have the time do a lot more for the game they work on.
