Are there any google docs based CMS's ? Seems like you could offload the editing, saving, tracking changes to google docs - a platform many people seem familiar with now - and then keep the actual CMS to a bare minimum. Have it import the text & spit out a static page even.
Bangor Daily News does all of their editing in Google Docs. They then feed things into WordPress and InDesign, but I imagine you could feed it into pretty much anywhere.
Transparent version control, tracking of changes, collaborative editing, familiar interface, familiar workflow (just drop finished articles into this directory to be available to the CMS)
