We added another drop-down menu to the banner, offering "What Do You Want To Do Here?" navigation. When you select a choice, the appropriate page appears in the content iframe.
We found this direct navigation scheme worked well on the ASIS&T and STC home pages. It augments the left navigation panel.
We moved the cluster of List/Search/Directory/Compare tools to the right-hand side of the page, over the new Glossary. We also reduced the number of choices in the left navigation, and retitled several of them.