Viewer charts are useful when they change what you do in the next five minutes. They are decoration when they only confirm that a popular creator is popular.
A slow climb after a topic change is a stronger signal than a one-second spike from a raid that already ended. Train operators to talk about slope in the recap.
Overlay gifts, follows, and topic changes on the same timeline. A dip after a product pitch is information. A dip after a disconnect is a technical incident. Mixing the two in a client report is malpractice.
If the source updates every few seconds, do not pretend you have millisecond precision. Store the native interval and label charts accordingly.
Weekday lunch lives are not Saturday night lives. Compare against the same weekday and timeslot. Cross-slot comparisons create fake emergencies.
Rising chat rate plus flat viewers: ask a question. Falling viewers plus gift burst: thank and hold the topic. Charts that never produce an action should leave the default screen.