The Pumas bajada scrum was all about a concerted 8 man effort (and also a focus on getting the power through the hooker more than through the props) so you'd assume his focus will go far beyond the front row.
It makes sense to focus on the 8 men work, if we stay just worried about the THP we will be screwed, they are at best adequate. But with a full 8 working together maybe they can become better than the sum of their parts.