As someone that played several of the games in the OP but only one sequel (Divinity 2). The reason being is that while I enjoy the worlds, exploration, and gameplay of PoE and Shadowrun, I hate the mostly text based dialogue and story and tend to get tired/bored because of it.
IMHO, just because the format and gameplay are a little more retro/throwback it doesn't mean you have to exclude modern conveniences like voice acting.