A feature I am looking for all the time is a search field on the HOME Tab which is able to search across several Business Objects like Incident, Service Request and Change.
Since no such feature is available, I've built a workaround. In all Dashboards I've added a search, which is able to search not only Knowledge entries, but also my other BOs.
I know, the search is not as good as the other searches in the BOs (no wildcards and other things), but at least I now have a rudimentary search for indexed fields.
Any other ideas?