Does anyone actually see Russia joining? The only belt and road candidate I can imagine from BRICS is South Africa.
However. There’s quite a few second-tier BRICS hangers on (Indonesia, Myanmar, Kazakhstan, Sudan, etc) that I can imagine could be quite excited about belt and road, at least in the short term.
Already seen it multiple times in Africa. First thing China does is sets up a local Chinese enclave to run the port. The enclave has its own security. If the victim nation tries to do anything about it, the port shuts down until they relent. If they try to take the port by force, it gets seized and held by the security forces, and may refuse to do any local shipping until the nation caves.