Ok, I have to say this because it just really is bothering me. Not to mention it literally KILLS immersion. So bear with me...
You have to have PC voice in your interactions with other characters. I mean I get it, I have BOTH Divinity games, but in todays game environment it really just comes off as lazy. It totally breaks the immersion, not to mention, there are times in the game that the PC speaks during random conversions while in the world. So why not just go all the way with it? I mean this all started in Dragon Age, where everyone spoke except the PC, but I mean even they integrated PC voice in DA 2.
Yes, and DA2 was a bad, confused game. And no, it didn't start with DA:O, it started in KOTOR1, when Bioware was aiming for a bigger market and a console release. Full VO has the same problem as "close up camera" has - it involves player less and less as more control the devs take away from the player. RPG becomes less about roleplaying, and more about watching a poorly directed film. It can work fine when a lot of effort goes into cinematics and when characters are well predefined (Mass Effect2, Witcher3) but goes against the design of a cRPG.
Honestly, devs give too much attention and sink too much money intro presentation. Yakuza games switch between fully voiced, fully animated cutsenes, to slideshows with VO, to no VO and stock animations for less relevant content.... and it works great! Still, modern games are not to be played, but are to be streamed and watched - and in that regard Larian excells.
That said, I am afraid you might get your wish, there are rumors based on devs quotes that VO might indeed be full. The few recorded lines are a sign of things to come, I think.