I think any reform to the process such as democracy vouchers are just a shell game. Ok, that money can only go to candidates or issue campaigns. Meanwhile other money will be spent in multitude of ways to shape public opinion. Where do the DNC and RNC get money from? What can they spend on? Just to name one of many entities with skin in the game that can't be funded by the democracy vouchers.
These reforms are going to end up just changing to rules to help one side or the other. Whether or not the ideas were formulated originally with that intent, by the time they get implemented they will be bent for that intent.