They sold us a D&D game so combats HAVE to be D&D combats.
Currently its about as D&D as Dark Alliance was. Same names, different rules.
Currently, the game is still ~a year away. Far too early to make absolute judgments. I would bet many things will be much different in the release version than they appear today.
One year is not a lot of time and means all important design decisions have already been done and implemented.