Honestly this would be a good method. Limit AI voice acting to only single use NPC such as Town folk when you visit a town and then have like shopkeepers or party members or the main character actual voice. You aren’t expecting much out of those temporary characters anyway so them having weird Oddity voices isn’t going to be super jarring for the environment. Plus it will help you as the player realize which characters are supposed to be part of the story and which ones are there for just Scenic effect