No pleasure is greater than swimming in gold, and no political system is more suitable for that end than our good old merchant republic. Unfortunately, it feels kind of out of place in the modern era.
Well, if you are looking for a solution to this problem, look no further!

Ladies and gentlemen, please welcome Plutocratic Republics: a government form with all the benefits of a merchant republic, parliament and modern parties.

Taking the plutocratic administration decision with an administrative technology level greater than 85 will change your government to plutocratic republic, while some nations start as one, including Singapore, South Korea, Switzerland, Taiwan and more.

This government also comes with the ability to chose an investment focus: government, economy, military or development.

Moreover, this mod also adds Hongkong and Macau, both plutocratic republics, both chinese vassals.

Update: ET integrated plutocratic republic government, Hongkong and Macau moved to Barely noticeable nations.

Images:
http://i.imgur.com/oYzhaCO.png
http://i.imgur.com/kMBz4Ht.png