I've noticed various references to a "top consumers" feature in the front-end code, but nowhere else. I'm guessing this is an internal feature? I don't see it in the roadmap. Is it anticipated to be open sourced at some point or is it internal forever?

You're correct. It's currently internal but is on the roadmap to open source (under "Entity Insights"): https://github.com/linkedin/datahub/blob/master/docs/roadmap.md#entity-insights

Ah, perfect. Thank you!