Ehh...the issue is that with the Adirondack, in particular, a lot of passengers were (are?) taking the train the whole distance, which is around 12 hours...and there was no Business Class available.I don't think the Adirondack has many leg rest coaches anymore. I believe most or all of them went to the long distance trains, some to make up the extra consist required for the Floridian. They should never have been on a medium-distance train like the Adirondack in the first place.
Now, what the train probably needs is a full car of Amclub seats (the 2-1 ones on 66/67 and so on) at a premium, but the memory of occasionally doing that trip in Regional Coach is not one that I treasure, and the prospect of doing it in whatever seats Siemens dumps on everyone isn't one that thrills me, either.