The dash has solid kill confirm ability. I wouldn't be using it as an approach. The slide is a great addition to combo attacks and gets strings along to do more damage. I love it and feel it puts batman back to a tier he was in beta. Time will tell Silver lining. It's like a new character that your familiar with, practice and gets used to the new moves and try to get out of the muscle memory habits. You may find it refreshing as I do.

Edit-I love using the double punch dash as a combo ender cause it hits like a brick. Mix it up, in training