I like it.

There's an interesting question of scale that comes up: this tool helps me understand the behaviors of a handful of named users. Is that best for high-margin businesses with only a few users or for the most-valued users of systems with tens of thousands of users.

Given the fact that the big claim at the top is that you triage CRM, I assume the latter. In a way, this is kind of applying the Klout methodology to CRM (impose some sort order on "importance" and use that to triage personal attention).

What do the hooks look like for a developer?

nit: the blue circles are visually confusing until you realize they represent popup comments.