It's more than changing just the electoral system too. It's reforming the way that justices are chosen for the supreme court, and how long they serve. It's reforming the power the president's office has over entities like the department of justice. It's massive reforms over money in politics.

Basically, to have any chance for meaningful change, the US would have to undertake a system of massive constitutional amendments. And there hasn't been an amendment in more than 50 years... and that last one was a fairly benign change to the voting age.