Thought about that, the problem w/ this is that it doesn't tell the whole story. We are relatively large and host all our content on this subdomain. For this use case, I was actually able to tell how many people are clicking on the content via the page through Google analytics (have an event that fires when people click PDF links on our site). As it turns out, based on these events in GA, there's a decent amount of content that people are not clicking through to...
However, what if this content is being used in automation emails? or by sales reps directly?
Although, now that I write that...i suppose we can leave the piece of content up in Marketo for anyone direct linking to it just in case.
I still think it would be nice to take a content centric approach to engagement and say "how engaging is this piece of content as a whole? across each of the programs that leverage it? etc" But I suppose that's for a later time 🙂
Thanks!