The problem
text cleaned up and and well-styled, or isn't it really a problem?
There are are two separated things here.
Text cleaned up
Well styled
The Well styled part is not important. Style is about design. But the "Text cleaned" is a little complex, depending on the case.
The key part is here:
to work out the structure of the document.
Any form of comunication has two main components content and form. From a simple conversation between two persons, to a feature film. What do I say, and How do I say it.
But there is another main part that is underestimated. Structure. This is a main component of the content.
If the author doesn't use an editor first.
As it is a main feature of the content, it needs to be addressed by the author or some editor.
The steps of the solution
1) Use the right tool. Some people use simply the wrong program. Uses Power Point or Excel to write information.
Some well formated presentations can be turned somehow easily into a word document.
2) In ANY simple word processor, Microsoft Word, Libre Office, etc. There is a main feature that defines this structure. The little box that has "normal, predefined text, body text" or simmilar. It can be changed to Heading one, Heading two... That is the structure, and it is very simple to use, but again needs to be addressed by the author or some redactor or editor.
A document with this well defined structured elements can be easily changed into a totally new design with some few steps. Sometimes in a matter of seconds, like when you change a template on a power point presentation.
You can change the look and feel of an entire website of thousands of pages if this structure is present.
The lack of this could result in a disaster.
I personally blame the developers of Word processors, because this toolbar (Heading one, Heading two, Normal Text) SHOULD be totally the main bar, but instead they put the "Change Font" and "Font Size" in first place. That is a total nightmare, inscusive for the author.