I don't think a zone with 6 divisions ( HWH,SDAH,ASN,MLDT,KGP,ADRA) will be formed it will be huge then....
If SER goes to RNC, CKP, DHN Divsions.......then ER will be restructured .....i think thern ER will be with HWH, SDAH, MLDT Division, A new zone ( EFR) can be formed with KGP, ADRA, ASN Divisions.