My only concern is that are all the staff following the files? Or are the halting issuance of eCOPR based on the few cases that are being reviewed?
I don't think that's the case. I think they do a reopening only if they have been tipped off or there is some credible reason for them to do it. If they do that for every application, its going to be a logistical nightmare.
It could even trickle down from an investigation on another applicant who was flagged; who may have had same employer or same immigration consultant, etc.
Biggest example of that is Tan v. Canada (Minister of Citizenship and Immigration) case where they revoked her citizenship after 10+ years once they found she had done fraud to get her PR. It all started from an investigation (related to another case) on the consultancy she had used.
This is also why we say, if you find anyone who has done fraud, even after PR you can report (as it should be) and there will be actions taken.