I think the core idea is strong, but it's missing several features that could differentiate it as a product:

1) adding an "advanced" tab which enables the user to input more information about the document, e.g. formatting, length, etc...

2) learning the user's writing patterns and style - I'm not sure if this can be done by prompting, but my guess is that there are methods that you can use to steer the prose towards the user's default style

3) plagiarism detection - this would require a large document store and could be implemented using fuzzy/semantic search via Milvus followed by string matching

Keep up the good work.