SER Adra Division i think will not built new pitlines at BKSC. Already Anara Depot is finalized. Adra Pitlines is also unutilised almost, so no point in construction of Pitlines at a new location near BKSC as Adra Division don't have that much of passenger train load.
Anara Depot is constructed to cater BQA-MSAE-HWH, ADRA-ASN, VSU-TAK-HWH, RNC-TORI routes mainly along with other Adra Division MEMU routes. BKSC will get catered by Anara Depot only additional depot i think is not required.