Comments on Ali Wyne "Reflecting on the BRICs", 22/03/2013, http://www.eastasiaforum.org/2013/03/22/reflecting-on-the-brics/
While some people may take the diversity of political and economic structures of the BRICS as a problem, that diversity itself can be a source of force and strength in an increasingly multi polar world.
Undoubtedly they represent the faster growing developing and transitional economies. They also have reasonable geographical representation, as well as population weights.
At least seemingly, there are G7 or G8 that represents industrialised countries, BRICS represents developing countries and G20 represents both the industrialised and developing economies, that is world major economies. In this broad context and framework, there is a reasonable place for BRICS as a balance in the world economic structural arrangement.