You have to keep in mind that all of these changes are minor changes in comparison to what you have to decide.
It was never a change between one type of system and another. It was always a change within the proportional system, and mostly within the mixed member proportional system. The changes referring to changes of the formula for distribution of seats from D'Hondt to Hare/Niemeyer and Sainte-Laguë, or from closed lists to open lists are not really essential changes, which I think is evidence that—