Things Divinity 2 should have had...
1.Elves
2.Dwarves
3.More Elves
4.Different Dragon mechanics and BIG BUFF to fire breath - because currently it sucks so much you'll be only using Fireball, breath only as finisher, while breath actually NEEDS aiming so it should be more powerful.
5.More characters from Divinity 1!
6.More typical for Divinity scenes (I mean, you lose control of character, someone appears from nowhere, you can talk/trade/whatever, you never met him/meet him elsewhere), it happened like 4 times only in whole DKS (I only count those 3 times with Willy as 1)