Ah, a Dark Souls 2 thread...
Except DS2 is better than all other Souls games, including Bloodborne.
But here is the twist: Can you actually explain why?
Anyway, I'd say the best way to play the Souls series is in the order they release. OP, you seem to be jumping around in a rather messy way going from Demon's Souls to Bloodborne (or the other way around, you never made that clear) and now Dark Souls 2, rather than playing the first Dark Souls which is widely regarded as one of the better games of the series along with DeS and BB.
That said, as for Dark Souls 2 itself, I consider it the weakest of the Souls games but still enjoy it like all Souls games because its more of what I love. I can at least assure you that the DLC of DS2 is definitely a significant improvement on the base game and all three of the Crowns DLC offer a lot of content. Still some flaws to be seen like the annoying unbreakable poise of some enemies, but still worth experiencing; if not for the bosses alone.
As for Bloodborne, after playing through it recently, it's probably my favorite Souls game, or at least on par with the first Dark Souls. If I could name one criticism I have with it, it is definitely the blood vials that have been mentioned. Why they went from the perfect estus flask back to the incredibly flawed grass of Demon's Souls, I will never understand. The lamps only allowing travel back to Hunter's Dream is also an unnecessary inconvenience coming back from Demon's Souls as well.
Really wish they'd just make the hub area part of the world like DS1 and DS2, but much like DS1 where its much more interconnected, rather than separate like in DeS, BB, and DS3. Makes for much more interesting level design.