Hey everyone! I just got another idea.
What about parallax scrolling backgrounds? You basically take, for example, 3 backgrounds, a normal space background without stars and 2 transparent backgrounds with stars repectively. Then you place them over each other (transparent backgrounds in the front) and let them scroll at different speeds. The result looks like this:
As you can see, the background looks more “3 dimensional” and allows more randomness by picking random base and star backgrounds. You could even use galaxies and nebulas as transparent backgrounds. What do you think about it? Is it necessary?