My overall criticism and concern with Chinook is perhaps actually best summarized by an ATIP response that I received from an IRCC manager in the United States. They considered using Chinook in the United States. Those visa offices in the United States tend to process criminal rehabilitation applications or visas from people from a multitude of countries.
The United States program manager said that their office is not suitable for Chinook use, given each application presents unique circumstances that need to be reviewed on a case-by-case basis. The manager later said that unlike visa offices, their caseload was not homogenous.
I think my concern with Chinook being used in some countries is that it's clear that IRCC views applications from China or India, for example, as being homogenous and people don't necessarily need to have their individual circumstances reviewed, unlike, say, people from the United States—at least as per that program manager.