1) Once leaving office, an ex-politician cannot accept a job paying an annual salary of more than 80% of what they earned while in office. No more Congressmen selling their votes then taking jobs in the private sector for millions from companies that bought them off.
2) Eliminate Public Employee Unions. Public employees do not need unions. The money cycle is harmful to politics: taxpayers pay taxes, politicians use the money to pay public employees, the unions get a cut, the unions give part of the money back to politicians, the politicians agree to raise the cut the union gets... repeat endlessly. There's no reason for a public employee to need a union. What kind of protection and legal recourse against harmful state actions can a union really provide when the state is the State? Are they going to sue in the State's courts operated by the State they have the issue with? States have Sovereign Immunity anyway, so what can a union really do? It makes no sense. Public Employees have a method of recourse available to them already: elections. They don't need a union to exercise the right or grant them any protections.
3) Eliminate geographic congressional districts. No one lives their life within just one district. People may live in one, work in another, have property or investments in others, send kids to college in others, etc. Instead, allot 1000 House seats to be filled by petition. Anyone who can get enough signatures to finish in the top 1000 gets a seat. Allow them to go over by 10%, so if you have to collect 100,000 signatures to get a seat, allow up to 110,000 people to sign on to their campaign. Allow them to suggest other candidates they align with for any additional signers, so if a Bernie Sanders-like Representative gets a million signers, he can tell the 890,000 who don't go to his petition to support other "Bros" he aligns with. Allow petition signers to withdraw support from their candidate at any time. If a candidate drops below 100,000 supporters, they are kicked out of office immediately and replaced by the next guy who meets the support threshold. Every citizen gets to support one candidate at a time only.
4) Eliminate state referendums. The People are not knowledgeable enough to figure out is a suggestion is good enough to warrant spending money on, since the People do not have a good enough grasp on the complex state budget. See: California.
5) Allow state governors to back out of pension deals in case of financial emergency. California teacher's unions (which should already be disbanded under #2 anyway) got the government to promise 10% returns on their pensions, when the historical average is 8%, and got it guaranteed--any shortfall on the returns to be made up by taking money from taxpayers. That's a load of BS that only went through because the politicians were bought off by union donations. Let the state out of the deal.
I'm sure in 5 more minutes I'll have a dozen more.