What's wrong with the Lakeshore Limited? I just rode it last October. The service was perfectly good. All they really need to do is get rid of the flex dining (replacing with traditional), but keep the diner open as a first class lounge after meal service, and it would be a top-notch train.
I've ridden the Crescent, too, pre flex, pre-Covid, and that was a fine train was well. They just need to restore the diner and add some more coaches to the consist. Well, and somehow deal with Norfolk Southern so they can implement a more convenient, reliable schedule.