We have people modding this with AI voices. The mods are actually pretty good and I think these AI fuelled mods will end up delivering enough variety of good quality. The problem is that the voice files don't actually contain all the lines of a specific voice. There's a variety of lines that are hidden somewhere else and impossible to find. If Larian could "just" move all the voice lines into the file containing 90% of the voicelines, then the modders could convert everything and we're golden.