A take home on this crucial summit to the other world is that this alignment called BRICS has come to stay, and sanctions from the other world against the new intending members into the ideology of the BRICS alignment makes them see more reasons to be members of this new emerging economic bloc. Some of the countries feel that joining BRICS will finally give them a seat at the table where their voices will be heard and valued. And the BRICS serves as that platform where they can have a real say in global affairs, not like their current position where they feel dependent than interdependent and underdeveloped economically and technologically.
I don't think anyone have too many expectations from this BRICS because its start with lack of confidence and few big players are doing few things for their own sack is having problems here even numbers are increasing but still its long way to go for having anything authentic.
China is main power behind this who is looking for strong allies Russia is also having some interest but still its never been easy for countries to have confidence because few countries role always suspicious which hurt organizations like this we have to wait for more exposure which will give better details.
If they are serious they needed to be work on few trading things and also currency because if they are successful then surely this could be huge success for them.