No trust in LarianStudios finding a good voice actor huh?

You mean dozens of good voice actors? So every "archetype" has its voice. A gruff dwarf, a cheerful halfling, a barbaric half-orc... Otherwise, no matter how good the voice actor, the voice is going to be off for many characters. Not to mention you'd only have four voices total for however many characters you make... They're going to repeat a lot. Especially that the current voices are similar.
The solution I always propose is to add a whole bunch of voices that would only be used for voicebarks. So like the current voice-over. That on top of those four fully acted voices (if Larian indeed decides to go with full VA) and an option for completely silent protagonist.