The goal for the Alberta Northwest Conference site was to make it clean and easy to navigate. One way to improve navigation was adding breadcrumbs to the header under the main menu. The other main feature of this site was a completely re-written version of our online Directory plugin originally developed for the Maritime Conference UCC site.
The Directory plugin allows the site admins to organize People (custom post type) into Directory Orgs (custom taxonomy). It uses the excellent Advanced Custom Fields plugin by Elliot Condon in conjunction with a lot of custom code to allow users to easily navigate a large organizational structure and export it to PDF or CSV format if desired.
Another neat feature we developed is the ability to drill-down on the wp-admin screen of a custom taxonomy, instead of displaying all levels at once.