Why not have toilets in the Roomettes and a couple of public bathrooms down the hall? Also I'd remove the upper berth in the Roomette. The Roomette was designed nearly a century ago for ONE person, not two. As you point out, Americans are a lot bigger today, so what was considered too small for two in the 1930s is FAR FAR too small today.Well I certainly vote for removing them and having two shared ones down at the end of the car.
1. Traveling with someone makes it an annoying dance when someone has to use the toilet. Even worse in the middle of the night. Do you wake the person up to leave the room or do you just do it next to their feet?
2. Keeping it clean? Unless you drop your friends off at the pool directly over the hole the vacuum suction doesn't clear all the excess off the plastic bowl and then you're stuck with that the rest of the trip since there is no toilet brush
3. Maintenance must be ridiculous. All of these vacuum toilets that people probably clog a lot must be a nightmare to service and take care of.
4. It's a very narrow seat. I imagine much of America doesn't exactly fit overtop like they used to when these were introduced.
Bring on the shared toilets for the roomettes, please!