Several other states have attempted that with ballot initiatives, Michigan and Missouri come to mind. But this requires a legislature that is responsive to the publics will. And its a bit of a moot point in Wisconsin anyway as it is one of 26 states without ballot initiatives. In Missouri they're straight up ignoring it (and a ballot legalising Weed too iirc). In Michigan they tried very hard to remove it from the ballot, then invalidate the result, and when neither worked they passed a law making it harder to bring ballot initiatives harder in the future and last I checked they were trying to stack the independent commission. And as for taking it to court well look at North Carolina that has been back and forth to the Supreme Court for years now trying to delay the court order to redraw its districts.