Makes complete sense, and like you said, this information is key for security researchers who routinely trawls CT logs looking for discrepancy. And failing on CAA shortly after issuance is quite a huge red flag. If the scenario of rogue national state managed CAs was an issue we'd have pretty good evidence of it by now.

Another, somewhat unrelated, benefit of CAA records is that it allows you to keep tighter control over who and what inside your organization is allowed to issue/control certificates.