As far as I understand the current definition, the QualityIndicator is a decimal value between 0 and 1. Thus, can also be interpreted as percentage. While I think this can be a quite useful value, it is not clear to me how the device calculates the value and consequently it is not clear to me how the client can interpret this value.
Based on dicussion today:
Add a note to QualityIndicator to explain how a meaningful Qi behaves.