Evernote import discards styles

This was actually recently fixed there: Importing enex breaks audio links · Issue #1723 · laurent22/joplin · GitHub

That sounds good. Evernote's HTML format is good enough as it is and includes all the styling in the tags. The key part is indeed how to import resources and how to make sure they are linked properly from the HTML (for example image tags will have to be replaced to point to Joplin's created resource). Ideally the existing code from the Enex import should be re-used but it's a bit of a mess so it might have to be refactored a bit first.

As a first step I'd prefer your first solution of having two menu items, though I'd named them differently. Maybe just as ENEX – Evernote Export File (as HTML) and ENEX – Evernote Export File (as Markdown) (or maybe "to HTML" / "to Markdown". I think simplified/raw might be a bit confusing as it's not clear what would be happening.