Export to Outline / Text

Working on a project today, the idea came up to be able to export an outline of all content related info into a format where text elements could be edited --- for example we've just produced a Mockup for a homepage with lorem ipsum and fake titles etc. Now we're transitioning to producing a more realistic draft of how the site will look --- I want the client to provide sample content for all areas in roughly the same format/length etc.

It would be able to send them a doc with an outline of the various elements and the content needed for each section.

Because we've got those areas defined already in the mockup it would be convenient to then export all text related content with sub-headings for the element they are coming from --- in order for the client to provide that sample text for the next phase.

Another good example of something similar is MindMeister's Export Outline feature that takes the visual map and puts each branch in a word document as a heading and each off shoot indented below that. This produces a very simple outline based on the MindMap content --- I know the Mockup is a bit more complicated but I think the XML contains enough information about each element and it's content to probably produce a nice outline for this.

Of course if that's not too ambitious --- importing that same content back into the mockup would be then brilliant, but that's just a dream :) And I'm sure the dreaming could continue further from there.

Ideally though , I'm just thinking about a simple --- export all text content --- feature down and dirty, anything beyond that would be bonus.

Would anyone else find this beneficial? I know some people have discussed that creating mockups with lorem ipsum is not a good idea in general... using fake content and not real content is not good either.. etc... I'm in agreement to some extent...