What do you need reserved times for? Not following.... These cars function as Sleeper Lounges on three Amtrak LD routes, and even during meal periods, there’s plenty of room..... Tack them behind business class and do it as an upsell for any corridor trains. You buy a business “plus” ticket.
Course on some trains - the Vermonter - does it make sense to call business class “business class” north of Springfield?
I’ve long argued that Amtrak should create a “touring” or “premium” class. VIA’s done well with this - Prestige, Tourist, Sleeper Plus. And for corridor trains - you still have business class...Family traveling home or to visit - they take business class?