This train can be made to run as a Bangalore to Mumbai SF, by combining UBL DR extended to Bangalore
My suggestion:
Onward via SUR. SBC/ YPR Dep 2040; SUR 0815/0830; LTT Arr 1545. Return via Hubli: LTT Dep 1900; UBL 0800; SBC/ YPR Arr 1530.
Onward...
more... via UBL. SBC/ YPR Dep 0900; UBL 1600; LTT 0700. Return via SUR. LTT Dep 1200; SUR 1900/1915; SBC/ YPR Arr 0630.
SWR can take over SUR SF with maintenance at Bangalore. If this is accepted, we can get two daily trains to Mumbai. Only minor TT changes in existing UBL DR or YPR SUR sectors. No rake idling at Mumbai also, as it leaves within 3-4 hours.