I haven't tried out SE just yet (because I don't have a PC) but I guess the feature I am going to suggest is not in the software yet.
(If you don't have a PC then why are you suggesting anything, one might ask; I do have a Mac, so sooner or later I want to use SE, either via bootcamp or natively on the Mac once the port is finished.)
I see my use of SE in making videos for the music I am making. I have always wanted to somehow be able to create fly-bys of exoplanetary landscapes. Using programs like Vue or Terragen was too complex for me. A few days ago I discovered Space Engine, and I was very excited to see that not only it simulates the actual entire (!) universe, it also lets you land on planet surfaces!
My suggestion is to add an offline rendering mode. I would like to be able to create videos in full quality without having to buy an expensive gaming-class PC. I imagine that I could mark waypoints as I run SE normally, in a lower gfx setting. When the path is finished, I start offline rendering mode. In this mode, SE follows the path and renders each frame at full quality, saving it to a video file. This may well take many hours or even days. It's basically like a drone where you first fly the path manually, creating waypoints as you go, and then let the drone re-fly that path to take a smooth video.
Optionally there could be a time factor that allows for slower movement (increasing the video duration).
To create video clips it is not necessary to maintain a good realtime frame rate so I thought this "drone path mode" with subsequent offline rendering could present a solution to video makers without a large budget. It would also open the door to create 4K (and by extension, 8K or 16K in the future) videos in excellent quality.