Are you opposed to consistency of the guest experience from one train to another?
Absolutely not, I complain a lot about the lack of it, even on the same line! Hell, I would love it if Amtrak embraced the term "guest experience", since it seems like a lot of the OBS treats us like two-legged cattle.
Anderson's failure, in brief, was trying to do too much too fast and not realizing that serving the customer isn't really that important to whether or not Amtrak thrives as an organization.
That's an interesting theory; the PIP advice, however, was largely about standardization and coordination of services! Each route had a different way in which it was substandard, and the advice was mainly to bring whatever was defective about that route up to par.
And therein lies the problem and my point: Airline management is used to thinking of their airline as a unified system with occasional differences due to equipment and servicing logistics. As you said...Amtrak can't even standardize one of its routes.
The PIP advice was line by line and dealt with the stakeholders of each of those given lines. They were not thinking of Amtrak as an entire system, or trying to impose the same standards regionally. It took them a decade of arguing in court for the FRA to finally be allowed to adopt one standard metric for managing on-time performance.
What Anderson was going for was trying to unify Amtrak as a system. In some ways, this really isn't possible. A pilot rated to fly 737s domestically can fly one anywhere in the country. Can you imagine a BNSF crew on the UP Overland Route?
Nothing. They were never legally required to be implemented
49 U.S. Code § 24710(c), actually does legally mandate implementation.
Amtrak is ignoring several other still-operative legal provisions of PRIIA, such as the one requiring them to report avoidable costs, and engaging in this lawlessness mainly because they can get away with it (nobody is in a position to crack down).
Technically, the FRA has the enforcement power here, but they don't even have an enforcement office as best as I can tell.