Governments over the ages have been either the source of happiness of its people or sadness and depression. I look at an efficient government as the government that is so efficient that make you feel that there is no government. It is like you are dealing with a bank that is very efficient and every thing goes smooth. You may not have much interest how they accomplish that but you like it this way. Once a year or so you may ask who is the manager or CEO of the bank. An efficient government I look at the same way that it is so effective that people feel that there is no government. As you guessed the bank has no party system and very likely was very efficient because of the dedication and harmony of the staff of the bank. Can we make governments work same way, my answer is yes if we to do the following:
1- No party system since it had proved to be divisive to the country and allowed dictators to dominate over their countries.
2- Media that supervise every part of the government.
3- No interest groups or outside money that corrupt the government.
4- All mechanisms to prevent the corruption of the government.
5- Weak politicians and strong citizens thus the government officials are serving the public and not vice versa. Politicians are not getting strength through absolute power and authority or through the strength of the party.
6- Politicians are more of independent people that in the network in the government and have to work it out between them.
7- The government will become much less attractive for dominating dictators and corrupt individuals. People are basically will change their attitude towards their leaders and they will be looked at more like CEO's.
8- The government in every country would hold the human values of free speech, women rights, women rights, religious rights... That will make the people happy feeling social justice, equality and freedom.
9- The government overtime with all its intact institutions that allow smooth and very efficient governing system will make people do not feel there is a government and they will worship their God and enjoy their families. Meanwhile will prevent most causes of wars and social upsets.