I think these new NightJet trainsets are great. Regarding the ability of cars like these to replace current Amtrak sleeper stock, I question whether the couchette berths and mini-suite pods would be useful for anything other than single-night sleeper routes.
When these new trains finally hit the rails in 2023, The only routes they will be assigned to initially will be Vienna to Venice or Milan or Rome, and Munich to Venice or Milan or Rome. This is, in part, because only Germany, Austria, Switzerland, and Italy have approved their use. More countries will give approval in the not-too-distant future, I'd imagine.
Doing a quick scan of all NightJet's destination combinations, I believe Vienna-Rome is the longest, at least in terms of time spent traveling, 15 hours 20 minutes. That compares to Amtrak's shortest sleeper routes by time spent traveling, the Palmetto and Auto Train, which both clock in at around 17 hours, and the Capitol Limited, at 17 hours 25 minutes.
That said, these new couchette cars have been designed for a system in which every single sleeper route is shorter than any of Amtrak's, with the purpose of getting people from point A to point B efficiently and comfortably overnight, not necessarily provide them with an "experience". I'm good with that. I believe that should be at the heart of Amtrak's mission. I know others here disagree.
Consider, for example, the seating arrangements. With the exception of the flip-down seating, there is no other place for anyone in the couchette cars to sit, except in their berth. The flip-down seats don't appear to have any padding on the seat back, and there are not enough seats to accommodate every passenger in the car. Also, anyone sitting there would have to get up/move to allow others to pass by.
These seats look like they are designed for utility, not comfort, something passengers might use to put on/take off shoes, maybe sit and eat something ordered from catering on one's lap, and not much else. Perfectly tolerable for a one night trip, probably not so much for passengers on the Empire Builder or the Southwest Chief or the Texas Eagle.
If one booked a mini-suite pod on a long, multi-day Amtrak route to view the scenery, they will likely be disappointed. Yes, there is a window in each pod, but it's hardly conducive to watching the miles roll by.
Consider there is no diner, lounge, or sightseeing car, likely to keep costs down. But also, with NightJet, the type of passenger they are catering to probably just wants to get into their space, maybe order something to eat in their berth(which, by the looks of the menu, means hot entrees are some form of microwave meal, not included), grab some sleep, and wake up the next morning to a very basic included breakfast and arrive at their destination.
If fares for couchette car accommodations on Amtrak long distance routes can be priced competitively, and Amtrak properly communicates that booking in the couchette car is just a step above coach, perhaps the inconveniences will be overlooked by passengers.
Routes like the Lake Shore Limited, the Capitol Limited, the Palmetto, and the CONO are shorter trains that could benefit from using the couchette cars, though it would be helpful if incremental improvements along the routes could get run times down.
As far as possible new single night routes that could use the couchette cars, I can think of an overnighter between NYP and Charlotte, either via Crescent or Carolinian route, NYP to Atlanta via the Crescent route. Yes, the Crescent is a night train, but I was thinking of a second overnight train that departed NYP a couple of hours later than the Crescent, terminating in ATL. This is another example of a route one hopes will see improved run times as improvements are made. Also CHI-Twin Cities, CHI-Nashville, CHI-Toronto.
Any thoughts?