I've noticed those new "Add new image" buttons next to the galleries. Not only are they non-functional, they also shove the images themselves to the side so that they aren't taking up the entire page width. Can you make it more aesthetically pleasing by, say, moving it to the bottom with the "Show more/less" buttons, and make the button work?
Also, when presented in Discord, everybody else told me to take it to your wall.
…into MediaWiki:Themes.css. We’ve worked very hard to keep our Infobox CSS clean & future proofed by using stronger selectors instead of !important, so please keep to that standard. If you have no choice but to use !important because you used it somewhere else & must override it, then you should fix the CSS you’re overriding to remove !important. The more you use it, the more it forces you to keep using it, & the harder it becomes to clean up code later.