I hope you are referring to NWBV as Bulb cabin. BZA Bulb Cabin development as station needs lot of work related to space, building PF's. The main problem is freight, where do you stop them for crew change ? Kondapalli can't be an alternative as again space issues there as well. Only option is Gunadala station. GALA station as of now is not in City and doesn't have accessibility. You can see in google map that no even a building present near the station. BZA to GALA station is around 9 kms and not 3 kms.