The only thing that feels similar to DoS2 to me is the origin system, which they probably kept because multiplayer is a big part of Larianâ€™s appeal (and likely one of the major reasons they were picked by WotC).
It feels much more influenced by Dragon Age than DoS2 on the whole.
â€œBut his mind saw nothing of all this. His mind was engaged in a warfare of the gods. His mind paced outwards over no-man's-land, over the fields of the slain, paced to the rhythm of the blood's red bugles. To be alone and evil! To be a god at bay. What was more absolute?â€