My guess is that the BRICs currency idea will go like a session of the Indian Parliament: lot's of talk, talk, talk but nothing done because there is not enough bribe cash and favors to go around, with the next election reshuffling the cards of the world's largest multiparty democracy soon enough for another try. A too little appreciated virtue of democracy is that it tends to kill off new ideas by exhaustion through endless gasbaggery, bad ideas like the BRICs currency especially.
The BRICs, as an anti-USA economic coalition are not living up their hype/ The pro-Putin crowd here has been hyping BRICs for years here.