I apologize for my earlier analogy, it is a lot worse than a fart out of the tail pipe.
Parallel charging
There will be differences between cells, a few %. The cell of the lowest capacity determines the total charge-able and discharge-able battery capacity. Cells age, available capacity diminishes over time and varies more and more amongst cells.
Parallel charging enables to micro-manage the charge per cell in particular when cells are individually loaded (battery tapped). Very rare scenario in this day and age.
Here, batteries are discharged in series. Discharging must be stopped when the cell of the lowest charge is empty and charging must be stopped when it is full. Parallel charging would have little if any practical benefit beyond micro-management.
Parallel charging would require one isolated inverter per cell, capable of the maximum fast charge current + associated heavy wiring. 4V 30-60A x 8. Please consider size, weight, connection, cooling and reliability.
Actually, switching and rectifying losses depend mostly on the current and in practice would be almost same for a single 4V inverter and a 32V series charger.
Electrically, a parallel charge arrangement here would have 1/8th of the efficiency of the current 32V charge arrangement.
Then, these eight chargers must be managed and monitored!
No thanks, KISS
Overload
Generally, Li based cell chemistries will tolerate transient overload less than others. Au, Ni or Pb based cells can handle lots of abuse as these do not chemically deteriorate, at least not very quickly.
Important to all batteries is that the cells match, by effective inner resistance, throughout the event. Gross mismatch could even reverse a weak cell. The result would be rapid cell deterioration or outright destruction.
A partial cell failure, resulting in capacity loss or effective inner resistance increase, could trigger this scenario.
Mis-wiring
Swap of monitoring connections would identify the wrong cell to the management system, but would likely be detected by a production test.
This is a serial charge and discharge arrangement. Operationally, the weakest cell counts. Mis-wiring
by swapping amongst cells would have no effect on charge/discharge management.