Would AI make future game difficulty better?

I was thinking that as AI and basically neural nets, couldn't AI in video games be soon as a baseline feature. You can tell it how difficult to be, as you play it learns how to match the difficulty. You could even command it to play at various difficulties different on days. I was just thinking like we have these starcraft AIs, but like what if in a Heros of might and magic, you could have an AI that you could describe how to play, how aggressive, and in general it could then implement that level.