1.ERS-SBC may not happen any soon unless any political pressure is given towards the board.
2. MDU,CBE,MAS-BNC/MYS VBs are all different routes and catering to different regional demands. Only ERS-SBC will be an exception if it really happens now. Moreover, With new pfs at BNC & premium category train like VB, PF issues won't be a problem for at least VB kind of trains.