I’d like to try enlightened preference voting in Denmark or New Hampshire.
How it works:
1. Everyone votes for their preferred thing (whatever is being voted on).
2. Everyone somehow registers their demographic data.
3. Everyone takes a 30-question quiz on basic political information.
With 1-3, we then estimate what a demographically identical public would have voted for if it had gotten a perfect score on the quiz. We do that instead of what the majority/plurality actually voted for.
There are lots of details here I’m not getting into, but that’s what I’d want to try. No one’s done it to actually decide policy, but researchers have been doing this in labs for a long time with good results.
I realized after reading this question that most of the reforms I work on save dollars rather than cost them: Eliminate cash bail, eliminate career prosecutors and instead have prosecutors and public defenders be the same people from the same office, eliminate SWAT teams in most towns and federal distribution of military equipment to the police, open borders, require the FDA to auto-approve any drug approved in certain other countries, etc. Most of these things are free.