Such countries are the ones with the motive of dedollarization. Some other countries that are joining BRICS may not think about dedollarization but about some benefits of joining the organisation, although while some may also think about it.
Chinese Yuan recently become the most traded currency in Russia. Some other country are joined BRICS while some other countries are planing to join. Most of the imported products that these countries are using are from China. I see China looking for ways to make Yuan dominant the US dollar as most countries are depending on China than China are depending on them.
BRICS is nothing more than China wants to dominate the economy.
I can not forget this old news: Chinese lenders, the Export-Import Bank of China, also known as Exim Bank, has taken over the Ugandan Entebbe International Airport and other assets in the country over the failure of the Ugandan government to repay a loan.
I hope these countries will wake up and know that China may not be their friend. Why BRICS?
What do you mean, propose? It already "exists" in the sense that it is a grouping of countries whose economies are meant to act as a counter weight to the power of places like Europe/America/Australia/etc. It is a description that these countries already have a trading relationship, but would not necessarily find it beneficial to integrate any further. India and China are becoming ever more economically adversarial and as Xi Jinping continues to fuck up his country by taking the authoritarian Mao-esque route, India is going to pick up a lot of extra business as foreign companies abandon China. Russia is a basketcase again, after it was cut off from a lot of advanced tech due to their invasion of a peaceful neighbor. South Africa is a fragment of it's former self that got it into this group. None have any particular interest in joining further, except maybe Russia which will be consumed by China.