I think the issue people have with Div2 is that they see the new perspective being like that of oblivion, gothic, two worlds, etc. Then they think they game will have the same kind of open ended feel. To some extent it does, but I prefer to think of it as Divine Divinity with a different camera angle. Then it can more easily be accepted as just being a load of fixed areas to discover, and a few fetch quests.
Still, I found the storyline enjoyable, and it was nice to get a conclusion from DKS (the original without the extension has a lame ending), even if they did make the first part a bit too easy at the same time.