Here's hoping VIA's core concepts can prove out a better Viewliner replacement, so Amtrak can buy east coast LD equipment off the shelf. Even if it's just coaches and sleepers, not full consists, having a hot production line or even just a current design could be critical.
Everyone seems to want some combination of NEC night trains, expanded cross-border service, more capacity on single level routes, and more frequencies. Heck, if the Superliner replacement program really goes sour, there's precedent for "just buy that single level off the shelf model instead".