NTES is the salt of Railfanning. IRI is the sugar. - Kirti Solanki

That depends on how close these stations are to places where the ETS facilities are available. For MYS, SBC/YPR are only 2-3 hours away, and e-loco operations can be carried out from MYS, and the numerous trains between MYS-SBC will help in moving locos to SBC/YPR trip sheds for basic maintenance. Trains like KK run for a long distance with e-locos. And given a choice, it will be preferred to handle these locos in a trip shed rather than leaving them alone in a siding. Since MMR is quite near to DD and has all the necessary facilities, most likely trains going towards SUR side would have their loco change at MMR, while trains towards Pune will continue on-wards with the same loco.
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For KK and YPR-ADI at least, it is more likely to have a e-loco haul between GTL-SBC as GTL has already been handling loco changes for a while now, and continue with the diesel link till MMR ( both also have enough slack before MMR to account for this time).
DD's proximity to two major stations with large trip sheds, means that DD itself will not handle too many loco links until the electrification extends further towards Wadi.