@jardon are you still wanting classic confinement for this snap? If so you need to provide some justification as to why this is required, and to which of the supported categories listed at Process for reviewing classic confinement snaps you believe the mongodb snap fits within. As from what I can see it doesn’t really appear to fit within any of the existing categories, and I can’t see any great justification as to why this snap is not able to work under strict confinement.