With the release of the Northeast Corridor, I thought that it would be fitting that the AEM-7 would be added as a DLC loco for the route. And this is just another suggesting, but maybe even add the Budd Metroliner EMU as well!
That metroliner would not be a good fit for the NEC route right now. Amtrak only used them up until 1988 and the current route is not set in that time period so it wouldn't make sense to see them running alongside the new locomotives. I have to admit, I like that red white and blue paint scheme on it. The AEM-7 would make a little more sense seeing as they officially retired those in 2016 having the current locomotive in TSW, the ACS-64, being its predecessor. I wouldn't be opposed to this.