After taking out the Breadcrumb navigation both Michale and Eric made mention that they thought the Breadcrumb navigation was useful and that they missed having it.

However, in the case of what we're doing breadcrumb navigation for browsing isn't quite appropriate and doesn't quite fit with our data structure.

It might be better to have something like breadcrumbs but more displayed in a hierarchical fashion. Showing the "trail" back up to the parent dataset.