In our 2.5K-topic merged WebHelp project, we've implemented a
series of navigation pages similar to what Rick suggests.
Whereas the TOC is categorized by major features, the opening
page provides links to pages for User Roles, Functional Tasks,
Major Components, Menu Help (split between Client and System
Administration), and Reference. (I used a free
tooltip
utility from Walter Zorn to provide a hover "peek" before they
click to jump to a link.)
Each category within these pages has a list of the most
commonly used topics. Therefore an "Operations & Technology"
user would be provided lists of topics dealing with his normal
duties such as Batch Processing, Imports/Exports, XML Messaging,
etc.
Another method might be working with the developers to tie in
privileging to apply to the help as well as the application
features. You could "map" topics by using folders and/or topic
keys, such as leading "sa_" for system admin, "bp_" for batch
processing, etc.
Good luck,
Leon