Why not try a radical idea? Speak to the people who will be using the intranet and find out what they need it to do to support the business.
Three suggestions:
- Well organised, project-specific document stores where all the docs and reports can be stored and retrieved.
- Up-to-date copies of all procedure manuals.
- Searchable database of all minutes, notices and reports.
When the business users are satisfied that you've got thet working, then you can think about bells and whistles.