I'm gonna take a hit and disagree, I think PC voicelines can cut back on a lot, It creates less options for a player to choose when wanting to say something, the reason why this would be, is because of budget and how much voice actors cost. Not to mention creating multiple for different voice types, we saw some PC voice lines in Divinity: Original Sin, but that was minimal, and that is 100% fine. I think we should also take into account about how dialogue may feel to a voice actor saying it- opposed to a player reading it in their head. It gives the player the ability to feel like they are their character. Not just playing someone else's character. Another point I would like to add is that it will also limit quests, dialogue options, and so on due to a studios budget. The amount of voice lines that would have to be read for characters- this isn't including the fact that there are multiple "Voice types" for characters, we can look at Fallout 4 for example- a game of which player voice acting brought it down heavily, and with it only having about 13,000 voice lines for the male and obviously 13,000 for the female voice actress and 4 dialogue options each and many being repeated for the game. PC voicelines to me sounds nice at first but when looking into it deeper, it may feel like it strips away from the core values of player freedom.