It's still a 3rd person action game like Souls/Elden Ring, so I would stick with a controller.
DD1 was one save only as well, so that's not surprising. Being unable to start a new game without manually deleting your saves sucks ass and needs to be corrected asap. The mtx are disappointing, but it's a single player game so they're easily ignored. I've only had a chance to play for less than an hour, so I haven't run into a city where the performance issues are supposed to be. Getting 90+ FPS on a 4080 super on almost maxed settings without RTX enabled.
I've liked what little I have played so far, the only annoyance was a random pawn walk up to me and tried to invite himself into my party.