I can't. Can't. read 100+ pages of this, so I'll just chime in with my opinion. I'm sure it's duplicative of something else you've seen but here goes:
This actually makes sense in many ways, and doesn't really call into question their moral fiber. It boils down to whether you believe their stated grading method. Three graders independently get an unmarked book and provide their grades in a vacuum. If that doesn't change, then their impartiality still isn't in doubt. They're just building economies of scale and specialization. Classics does a resto check, freeing the graders up to grade (faster we can all hope). The graders still grade in a vacuum. Doesn't really change all that much.
From the collector perspective it certainly codifies the necessity of pressing to achieve high grades. That they bought the company (instead of some kind of strategic partnership) means they're acknowledging this, as well as keeping their preferred provider close to hand. They benefit from Classics expertise in resto, presumably increased speed in resto checks, presumably faster grading times when graders don't need to perform an out-of-skill-set service (resto checks) and they gain an income stream from the pressing. I would assume they would be able to combat burnout and grading fatigue by switching already experienced staff between teams.
Hopefully, though, this is the reason they haven't hired any new graders--they were marshaling some funds for a large purpose. Could have just put up a sales thread, though, and save a lot of panties from bunching.
Now, I'm off to read the rest of this monstrosity quickly before it gets locked.