Looks amazing but I'm thinking that even with an amazing open world that you're still gonna end up with a lot of generic single player MMO style questing - go there, kill 10, return for reward, etc.
Not the end of the world - they can only create so much distinct content and the story quest itself is probably more compelling. I'd argue that Skyrim is filled with the same kind of content at heart but manages to have such an interesting world with interesting content bits that you can easily stomach that you're ultimately doing the standard kill, fetch, talk to routines. By contrast in DAI I feel like I'm playing an MMO designed for soloists with a ton of braindead solo quests (but I think that's largely because the combat is so lackluster to me).
At least in a game with active style combat, you have to pay attention and actually play instead of just watch the AI play for you like you do 95% of the time in DAI. I don't consider combat in Skyrim to be anything special but you still have to actively participate - witcher is far more robust.
So we'll see. I wasn't going to buy this since I could never really get into Witcher 2 but it's looking tougher to and tougher to pass on (or wait for the 7.50 sales).