I’ve kind of being experimenting with two ideas that are really VR friendly but not flat screen.
They are having buttons on the side of your gun and this is kind of interesting since you can put a lot of buttons on the side of guns. It kind of solves a UI type issue I have where I need a few buttons to take place of the F keys.
The other is indirect fire, you can follow the rockets up and then as they rain down. It is kind of satisfying. I dare say there could be a dodge mechanic there. Like in Robo Recall except you move along the horizontal plane.