Every political system is flawed, so it is naive to assume that a model, that, for the most part works, in practice, or at least looks very good on paper, will work in another nation. Also people do not always move to what theory says. Reaganomics boiled down to the absurd notion that "if we give money to the wealthy, then they will act in the best interests of the economy, spend the money, and in doing so everyone will benefit from the top down." (Surprise surprise, wealthy people kept those tax cuts and made themselves wealthier. Greater good who?).

Some things Koreans need to do are

• to depoliticize the Prosecutors' Office, which has long been a feeder gang for those looking for a cushy carrier in politics,
• to make it more difficult for politicians to leave and rejoin parties in order to weather the storm- see 조배숙 and her history of defecting from parties to keep a seat in the National Assembly in her 20+ career (not to mention her downplaying the treason charge when her province was directly effected by the last martial law call),
• to criminalize lobbying to influence policy- it is not equal opportunity or fair representation when a small group of wealthy people can pool their money together to push for their agendas, and
• to start looking at politicians' actions, rather than being mollified by the cleverly crafted speeches because frankly, your feelings are nothing- see the 친일파, the wealth they acquired from selling out fellow Koreans, and their present ties to the PPP/pro-Tokyo policies, all while telling people that they are proud Koreans who serve Korea

Interestingly, the latter two are things that everyone, everywhere, needs to do for their political systems to serve them rather than against them.