Don't get me wrong, I love the fact Divinity doesn't hold your hand, and I love how interactive the world is.
The lack of decent characters and engaging writing (the writing had a cute whimsical charm to it, but it rarely felt compelling) didn't lend any urgency to the gameplay. Toward the end of the game I started feeling bogged down by all the little interactions and mechanics, the story and characters just weren't pulling me forward and I felt little desire to push on.
I haven't finished DA:I yet so I can't comment, but Shadowrun: Dragonfall kept me going even though the mechanics were so simple because the story and characters are so good. Imo, in an rpg a great story can carry lesser mechanics, but great mechanics have a harder time carrying a mediocre story/characters.
I don't think the story and writing is necessarily good in DA:I either. It's certainly better than Divinity, but not something I'd consider good. Another issue with DA:I is the new dialogue system and how most conversations with NPCs are fairly uneventful. And with the way the game is structured you can go a really long time without making any story progress or hearing any meaningful dialogue.