AI will help with the creation of all RPGs, and revolutionize in the same way that the internet has. There are plenty of repetitive tasks that an AI could handle even in "handcrafted" RPGs (which are of course never really handcrafted because they use a variety of automation tools). But the real boon to RPGs will be giving NPCs AI personalities that allows them to roam and react to the actions of the PC and the changes to the world. This can even be entirely voiced because AI voice generation will also continue to improve.