I want several parts of several games merged together. I want DF's level of complexity, set in space, with parts of Elite Dangerous and Star Citizen, and a more comprehensive system of adjusting power to systems. Like I want to be in a big battle and if I get damaged on the right side, I have to actually route power through undamaged systems in a more complex way than just "weapons, shields, engines" with no regard to the power conduits in your ship that may or may not exist after a big hole's been blasted in ya.
I want to capture the essence of the random shit the crew says in a fight in Star Trek, without it just being a simple flip of a switch. I want "fake science" that I can perform... Like sending various forms of energy through the deflector dish to do stuff. I can't even really describe it because it's one of those things that really isn't even possible with a modern video game. It would require dynamics that I don't think you can code with traditional systems; it would need quantum computing or some kind of AI to create new elements of the game on the fly.