I am of a split mind about this.
I mostly play origin characters so I do really miss the characters' voices when they are my PC. However, much of the player dialogue is so bad, that even someone performing it couldn't save it. I think, one of the many reasons why Astarion Origin with Gale as my constant companion and romance is my favourite version of this game is that Gale has excellently written player lines which I can easily imagine in Astarion's voice - and I am quite happy with that. It does help though, that they have these cute little overheard conversations with each other - like admiring the Myconids' spore zombies or joking about the Wyvern poison - and I really wish there were more of those.
Though maybe if the lines had to be read aloud, they would overall be better.
Another point I have been thinking about is something Gray Ghost mentioned on the last page. Most of the Sorc dialogue is written to sound like the character is a pompous ass and the characters react accordingly. Most of the lines in Gale's dialogue that are neither obviously mean nor obviously nice are written as banter and Gale reacts to them as banter. So does the usually pompous Sorc suddenly develop a sense of humour when talking to Gale? Or is our resident wizard just a really good sport about an obnoxious PC? As Ghost mentioned, as long as the lines aren't performed, I can have my own theory about it.
