It looks amazing. Especially the later half of the game. There were a few fights in particular where it felt like playing a stop motion animated film with the way the enemy model moved and blended with the environment. Very cool.

The story is MUCH more interesting and engaging than the previous games. It helps that they are arguably using some of the most interesting story beats from the comics, but the main questline is excellent.

Because of the next gen tech, the epic moments in the game are able to be much bigger and epic in scale and some of the little cinematic touches.

So the open world gameplay hasn't evolved much outside of better scene density and a bit more refined a combat system with core powers/gadgets rather than switching around a lot.

But the main questline experience is a huge, huge step up from previous games, and well worth the price of admission alone.