a note on 2) Simple CMS, on the "expand later" part:
I heard from several people who use it that a Wiki has proven to be an extremely useful tool in their intranets.
Imagine a Wiki that's integrated with OpenACS, like the versioning of the content repository, search, linking to arbitrary objects - wouldn't that be cool? Sorry, just a note to all those hackers out there that have too much time 😉