Then why design batteries with built-in cell balancing support, and remove the resistors to disable the feature in the last moment? You can safely say that if

Then why design batteries with built-in cell balancing support, and remove the resistors to disable the feature in the last moment? You can safely say that if the battery pack's total capacity drops under 75%, disable it, or detect dead cells and take action. Disabling life prolonging features while having a full MCU and a nice battery IC on board smells fishy to me.