They are also generally ignored by both sides in competitive races that determine who has control of the legislature. All of these changes will have an impact. Some of them are bad ideas. Most of them will do some good, although they tend to be less effective over time as candidates and contributors learn how to beat the system. But none of them are perfect.
Disclosure has no obvious downside.
It does not limit free speech. It does not distort or obscure the flow of money. It does not ask taxpayers to pay for campaigns. None of these are a sure thing. For campaign finance information to be useful it must be timely and to be timely it must be available before the election.