This suggestion is out there, to say the least, and I'm not necessarily saying it's a good idea. I'd be intrigued to be a fly on the wall during a discussion between Larian & Darren Korb though. Darren is new to the industry, having only done two video game soundtracks so far, for Bastion & Transistor. Both games had phenomenal soundtracks however, earning praise across the industry from players & critics alike. The Transistor soundtrack in particularly is just mind blowingly good, one of my favourites ever.
Like I said, this suggestion is out there because none of Darren's previous work is remotely appropriate for a fantasy series like Divinity. If he was interested in going in a completely different direction though, I'd love to hear what he can do.
Here's the Transistor soundtrack if you haven't heard it.
https://www.youtube.com/watch?v=-zA1jRmAYfU
