I plan to make an inline search module for D6. Basically it would provide a UI for various pages such as permissions, modules, menu, and other core ( and well supported module pages ) to provide a very fast way to narrow down the page content to find what you want.
For example on the permissions page if you are searching for "edit page content" rather than scrolling down and finding the permissions amoung many other modules simply type "page" and all other table rows that do not contain this text will simply be hidden. This is the base idea, very simple, but I can see this being handy at times.
Also rather than simply having a textfield to search, portions of the module may provide specialized options for specific pages again such as access controls allowing "quick links" of modules which would simply hide all permission sections that are not relevant to the module you selected. Or perhaps on the menu page choosing "show only disabled items" etc.
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MenuScout
Have you seen the MenuScout module? http://drupal.org/project/menuscout
I think Steven is looking for a new maintainer too...