Think of the switching opportunities! Its a simple loco, that can be reskinned for nearly any railroad (they all had them) and can be applicable to any route!
The problem with this is while they were common, now they're mostly only found on shortline, and actually wouldn't fit on any of the routes so far. CSX had a few but they mostly stayed in yards on other parts of the system (mostly Nashville) and now I think they're being retired completely. The MP15 would be a better fit as a DLC, IMO, because it would work on CSX *AND* LIRR, but that sounds like a lot of work on DTG's part, making both a LIRR and CSX version.
