G20 needs effective mechanisms in decision making

Comments on Thom Woodroofe “The G20: More development needed”, 9/09/2010, http://www.eastasiaforum.org/2010/09/09/the-g20-more-development-needed/#more-13997
While G20 should have its place on the world stage on important issues, it does not mean it will replace other important world/international institutions such as UN and UN Security Council.

G20 may, however, facilitate other world bodies.

Also, while G20 is much smaller in size compared to UN general assembly, it also needs a workable governing structure and mechanism to be effective and efficient.

For example, does G20 require complete unanimity or simple majority to make decisions?

Another issue is that while it should not adopt the veto mechanism by permanent members of UN Security Council, does it need some sort of representative mechanism as opposed to purely senate mechanism in parliament, by some measure of size like population or economy?

That issue reflects the differential impact of a decision on countries of different sizes.

That is also the core meaning of democracy, isn't it?

It may appear better to have some sort of combination of the representative and senate mechanisms in decision making.