Show the generated markdown when in the grid view instead of the raw text for markdown files.
The wonderful preview is especially pointless with mathml involved. 
The Markdown preview uses the text of the document, it’s not rendered (yet).
This would be a great feature. Would it be possible for you to save a cached thumbnail of the rendered document to show in the grid view? That way it would be rendering all the time and would be easily accessible for display. This would make visual search/Recognition a lot easier, especially if you use math or even the meta block.