Here's an image. First, some context: the image you see is 1920x1080 but the screen I use is actually 3840x2160 on a 32" monitor. I spend much of my time at a zoom level like this because I can see wide swaths of the galaxy while clearly seeing ship, star base and planet locations.
I'd just like to be able to toggle off the planet "labels" so I can see what's going on underneath without having to zoom into the area I'm interested in and thus losing the larger context. Take, for example, the cosmic contaminant that I currently have under siege. I wouldn't need to zoom into their planets if I could just press a key to toggle off the planet "labels". Instead, what I have to do now is move the mouse over the label to have it disappear but as soon as I move the mouse to the next label the one that had disappeared now reappears. This means that I can never see the entire area flag-free without zooming in.
Maybe this is only an issue for players with big monitors at 4K resolution whose eyes are decaying from their advanced years. Still, it would be a nice feature to have.