Bloodborne has the best PvE of the series and the world design and aesthetic was such a breath of fresh air. It was the true evolution of the Souls series and now that Souls is over I hope to see the Bloodborne style being the way forward. They just need to balance PvP better and remove the RNG aspects of gems and the GOAT FROM game will be created.
Also how about cyberpunk borne? I fully expect FROM and SCEJ to make a sequel or spiritual sequel. The IP was too much of a success not to do another venture.
A cyberpunk/mech type game would be fresh enough. It would probably have way more freedom in movement and would probably focus more on ranged combat which would be interesting since so far the series, even souls with it's magic, has been melee centric.
I'd rather have that if anything than just bloodborne 2. Go for something completely new. If you wanna keep it scary, go for a Giger/Blame! like aesthetic.