Two of the pages I visit the most frequently on any wiki are Recent Changes and Image Activity, but unfortunately, only one of those has an easy shortcut button to get there. It really seems like an oversight to not have a quick way to get to the gallery of files uploaded.
Sadly for myself, I have no idea how to create a .js or .css style (until recently, I could barely install them properly). But luckily, I have access to a forum like this where I can ask one of you wonderful wiki geniuses if you would be interested in creating something like that.
I'm thinking it could be in a similar vein to https://dev.fandom.com/wiki/RandomPageShortcut where it places an icon up in the header. It could replace the button that switches between light and dark themes maybe, or just an additional button on the line. Personally, I don't like to switch between themes that often, and there are a couple of really cool styles on here that can do that as well, should the original's space on the toolbar be needed for this new shortcut.
Bottom line, I think this would be a really useful tool for everyone, but can it be done? Heck if I know. I'm hoping one of you knows how to do it.