1. Repeal the 17th amendment:
This sounds good on paper, but what guarantees that the state congress isn't going to simply choose their Senator soley on party lines for just the possibility of future political favors? Even the lowest of state politicians harbors hopes of being president.
I want the state congress to choose their Senator for future political favors. The point is that the people do what is in their best interest, but the state politicians will do what is in their best interest. What is in their best interest is greater state powers. The people's interest is different. If a Senator lessens the state powers, then the state will not vote him back in. Therefore, the Senator must pander to the state in order to be re-elected. Why is that important? Because state's don't care about gay rights, flag burning, and national health care. State's care about schools and roads and infrastructure. All of the stupidity that is pure popular pandering goes away.
2. I like the idea of taking away the presidential election from the idiot masses who decide solely on superficial traits of candidates ("He's a normal guy who I think I could have a beer with." Who the hell wants to have an average person in the most powerful position in the world??). Anyway, I digress. The problem with this is that you're assuming that the electoral college will be composed of people who are more intelligent than the masses as well as unaffiliated with any political party. That's a tough thing to find I suspect.
I do believe that the electorial college will be slightly more educated than the typical voter, but that's not the main benefit. The main benefit is that the electorial college has no constituents. They don't get paid, they shouldn't get bribes (having fewer people will allow more scrutiny on their financial affairs), and they have no real reason to want to get re-elected. Therefore, they won't pick a president because he promises more welfare or free healthcare. People pick a president because he promises entitlements or "No new taxes" or whatever. They vote in what they think is their best interest (unfortunately, they don't understand the consequences). The electorial college could safely ignore those issues and pick a president based on what is best for the country. Since they don't care about re-election, they are free to make more intelligent choices.
3. Let's go back to the barter system. Most politicians really have nothing to offer other than words, so that should sufficiently weaken the ever-growing hegemony those in power represent. :-)
I believe a return to the gold standard is very similar to going back to a barter system. By preventing the devaluation of the dollar because of deficit spending, we can force politicians to tax us explicitly instead of through inflation.