imagine all the quests in WoW completely voiced
you don't need AI for this, you need the higher ups to stop cashing millions in bonuses and to invest that money into the game.
it's not an issue of "it can't be done", it's, like always, a money issue.
Not really because the ai isn't a living being, so it can't experience life like us, it can't feel the beauty and ugly parts of it. if you played DE or actually read a book you'd understand how an ai can't replicate the feeling these experiences give you.