A link to one named person, and their comments come back onto the work.
The person best placed to catch the error is usually outside your team, and usually the one you would least like to give an account to.

The ways to put a finished deck in front of people: a live page, a forward to one reviewer, or a file.
One source of truth. Sourced, isolated, approved, versioned, exportable, and owned by the customer.
Discussion where the work is. Comment on anything, bring in the person who needs to see it, and resolve it when it is settled.
The work you actually ship. An Expression is a rendered view of your intelligence, in your brand.
The pilot takes a small number of organizations at a time. Bring what you already have.