I'm also quite worried, they seem to think 75% took the good path because they want to play a good character. I can say that I saved the thieflings in the good path the first playthrough because I wasn't given a decent motivation to go help the goblins. Hell I didnt even know about an alternative until I saw the forums about Minthara. And there are many threads on this with the same problem. If you help the evil side you then get shafted by the game over and over. How Larian does not realize this after all the feedback threads they've gotten on the broken evil path is beyond me.
Maybe I'm being naive but I hope Larian is just fooling around with this update and is working on making these changes behind the scenes. They still have 18 months to do it. I have however heard a lot of bad things about the DOS2 EA where they hardly changed anything about the story, so if nothing regarding that is announced fairly soon I will have to hop on the hate bandwagon.