A BRICS currency has never been more important than it is now. The foundation of the USD as a reserve currency is based on its usage in the trade of oil. With Saudi Arabia, UAE, and Iran (oil producers) and Egypt (controlling the Suez) joining BRICS, there's a real threat to US currency dominance.

Not enough trade with India to justify taking rupees.

Good. No need to trade oil in US dollars except with the US.