Let's have a real-time strategy game with spaceships that kill eachother. Next, let's make this game involve elements such as stealth, terrain in the form of asteroids and hiding behind planets and planetary rings, and three-dimensional warfare. Then, let's make three-dimensional warfare matter. If you attack someone out of an asteroids belt from above them, their probably going to be hurtin' burgers. Next up? Space ships that feel "real". No ST:TNG ships that magically bank at 45 degree angles and do 180 degree turns in mere seconds. Space ships that feel like ships: They take time to speed up, slow down, and turn. Then? Weapons that also feel "real". Missiles that lock on, CIWS systems that shoot down missiles, laser systems that instead of blowing up ships, burn holes in the ships so you can see the little guys fly out of them, suffocate and blow up, thus reducing the ship's efficiency. The icing on the cake? Let's make the game fun using the above elements.