It's going to be awesome. Single player is tense and thrilling. Co-op with friends though, that is something else entirely, because you can all make characters have weaknesses and strengths, but as a group you all complement each other. Like having a tank, dps guy, healer etc. A proper dungeon party. You can block a narrow hallway with a giant shield, and have the guys behind you poke with spears or cast magic past you and all of those typical medieval warfare tactics!
Dark Souls games just get better and better as each new game refines the gameplay and stat mechanics more and more. Demon Soul's and even the first Dark Souls feel incredibly clunky compared to the sleek combat and movement of Dark Souls 3. And this looks like another step up from the what I've seen in the network beta.
IMO the graphics could have been more "next gen" and maybe they will be with ray tracing patch after release. But to me that's also a good sign, because it means they've focused on the gameplay and stats and world rather than shiny things.
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"Money doesn't exist in the 24th century, the acquisition of wealth is no longer the driving force in our lives. We work to better ourselves and the rest of humanity." - Jean-Luc Picard