Greater variety in the types of charms would be nice. Also, I hope after the obvious success of DD the publishers give them time to balance it properly.
The quest side of DD is just awesome, but the balance in the later stages of the game could have been better. Should have been better - and would have been better if the publishers had allowed the developers more time to finish it.
But I think the developers have more than proven themselves with DD, so hopefully the new publishers will see the sense in giving the devs enough time to polish Div2. Personally, I'd rather they went 6 months over time than not be allowed to produce the product that they're capable of because of publishing deadlines.
I'm expecting Div2 to be the best game I have ever played (and I'm an oldie who played Ultima I!)