I know nothing about coding because I'm just getting into it, but my question to the developers of their own WoW mods is "Are you capable of adding voice overs to your characters?"

If that is so and folks want to do it, I'd most likely offer my services as a voice actor.

If not, could it be explained why?

Sorry for the kind of vagueness, I'm just trying to inspire ideas. I love hearing voices in WoW, and it doesn't happen often enough. That's something I'd like to see changed in a mod.