I just found a YouTube video from Roarrior called “Ashes of Creation Must Launch With This Feature!” He talks about how voice acting is not a thing Intrepid want to do right now as it’s expensive and Steven consider it a luxury. He brings a solution that could, in my opinion, be a less costly solution: AI voice acting. Basically, he said AI dialogue voice acting would be less costly. He mentions an add-on for WoW Classic (No TBC and WOTLK) that add voices to NPC when they talk to you. He also mentioned that some players prefer to hear voices that read the text for some reason. It could add accessibility to the game. Intrepid want to use the latest technologies, and AI is going better and better. In my honest opinion, they could consider it for post launch.
https://www.youtube.com/watch?v=BJaMGRXfvis