I believe the biggest leap will come from 3D procedural generation. I want to be able to stick on a headset alongside my son and turn my living room into a planetary outpost in danger of being overran by alien bugs. We have to defend it but the game has to adapt to the shape of millions of different rooms to be playable. The AI would be able to take the in-game assets and alter them on the fly so we have a customised space to move in whilst we communicate IRL on where to shoot from.