Not to worry, if history is a guide. Almost every initiative the Dems have come up with to "rig the game" has boomeranged on them and come back to bite them.
If they are going to do this, then the Federal Lawyers better make sure it is ironclad with no loopholes. Knowing Liberals as I do, if a Republican wins the popular vote, they will suddenly change their minds and go back to the original system. Liberals do not obey laws or rules, and they have no honor or dignity at all. They will do whatever it takes to "win", at any costs. When they see that their plan is failing, they simply renege, or they change the rules. That's how they operate. After all, their motto is, 'by any means necessary'. That should tell you all you need to know.