Would be nice to see support for workspaces. The idea is, that a editor/admin/<you name it> can create drafts (new pages, edit pages etc.), store them in an user specific storage, review them in the original site layout and finally publish them or propose them for publishing if changes needed to be reviewed by a user with more rights.
This sounds like a relly good idea... and maybe possible thru a custom content part and content item... I may have a crack at this once I have time