With the recent discovery of our first real images of a black hole, I would like to see black holes universally get a brand new design style that reflects it in a way. As current designs go, the gravitational lensing effect is cool, but when there's nothing else surrounding it, they can get rather boring (my opinion, don't @ me). I'd like to see more danger, but also a more rewarding experience for taking a risk with that danger.
Real black hole image:
Possible game effect when up close (from Interstellar):
Real black hole image:

Possible game effect when up close (from Interstellar):
