I don't like a number of the changes in BD but generally I would congratulate Larian for taking a different approach and a different view of the Divinity universe. I'm sure many of the things you liked about DD will be back in DD2...but this isn't DD2 and I think that's generally a good thing. It's a pity BD lacks some polish but DD definitely had plenty of "messed-up" quests, so I can't agree that BD is worse from that perspective.
I assume from your comments you're in Act2...at this stage you've probably only encountered hints of the "real" story, so don't worry about that. I see a lot of people quoting the non-linear nature of DD but they somehow forget the opening Act was primarily a thoroughly linear and restrictive dungeon.
Just out of curiosity, how does the IWD party system allow you to "connect" better than BD?