That question come from several French WikiMOOC students (T117281). Some users create documents on Word, Libre Office, etc. because they prefer to use these tools instead of a page on wiki or because they work offline.
It is currently possible to:
- drag and drop CSV documents,
- copy/paste raw text on VE,
- copy/paste wikitext (rax format) on VE for conversion.
So have a feature to drag and drop simple text documents with a basic markup would be really great.