On finding a suitable image for articles:
When I edit an article (on the edit page; source edit, not visual edit), if the article is without any image/illustrations, I would like to see images that might fit to the topic being recommended, maybe on the bottom of the page. This could be a simple search interface (text box) pre-filled with the article title. I have seen this feature used in Wikistories, so if you guys familiar with that, you might know what I'm talking about. If not, you can try it on beta (here for example).
I have been looking for a tool to do this for a long time, for example this can be used in an edit-a-thon, to add images to imageless articles, because we have many good quality images that are waiting to be incorporated to the articles. But so far I have not found what I'm looking for. The exact implementation is open for discussion, like do I have to copy paste the image name, or can I just click the image to add it to the article, and how to accomplish this in visual edit / mobile view, etc. It could be displayed by default, or user have to click a button, or it could be activated/de-activated through settings, etc.
That's from an editor's point of view. From a reader's point of view, I'd love to see the link to Commons Category or Commons category is prominently displayed, or more easily found, rather than hiding in the bottom of the page (in "See also" section, or "External Links" section, usually using "commonscat" template), or even not present in some smaller projects. If the data is available in Wikidata that links a concept in multiple Wikipedias to a Commons category or gallery, the shortcut to that Commons category or gallery could be made available (or more prominently displayed) through a button, just like the interwiki button is displayed right on top (on mobile view/new skin), or in the left sidebar (on desktop view), the Commons category link could be prominently displayed like interwiki does as well.
And then, with regards to my other comment in Topic:X3lvi85jtk2yb9v1, I hope the user have some say in the algorithm of the displayed suggestions, either by vote up/vote down, or other mechanism, so editors from multiple Wikipedia editions could collaborate what images would be best displayed in that topic across languages. We should also be able to see basic statistics, such as how many articles across languages that uses the same image (not the total usage of an image across all namespaces in all projects, but for the same concept, as listed in one Wikidata item, e.g. File:X.jpg is used in article X in 5 languages, and so forth.)