I hope that what they said about TW3 being more similar to TW1 won't be limited to slavic soundtrack.
I agree, but I do still hope they find a nice mix. Politics are still a big part of the books (Which once again, started before ASOIAF) and The Witcher world in general, and it would be pretty redundant to have a story with such a heavy political backdrop like W2 and then just ignore it all in W3.
The stories in both games are excellent, and I think if they can combine a healthy portion of both they'll fucking nail it for everyone, regardless of whether your preference was the themes and "feel" of 1 or 2.