The app completely ignores images in labels - currently they don't show at all, presumably to save how much the app downloads.
But sometimes we put images in a label to make the pages more attractive, sometimes banners and clipart/photos but sometimes ones which are actually links to pages/sites.

Could the app detect if a user is on wifi, and if they are THEN show images?

If images have an alt tag (as moodle warns you to do when inserting images using TinyMCE) could that be displayed in square brackets when not on wifi, so you know an image is there?

And even if this idea is rejected, could you at least detect if images are enclosed by an <a> tag so that a text link to the website appears.