There is one very easy solution: toggle-ready voice acting, so that if one played the games already, they can keep having their canon voices play in their mind as they read the characters dialogues.
Well, voice acting can be very cost-effective if high-quality models are used for tertiary characters, for instance, such as "generic soldier #2" and the likes.
Why does this remind me of those juvenine "anthro-plane" drawn meme artworks from back in 2010's?