The only thing that really bugs me is how long it takes to load on PS3. That 30ish second loading time after you die is a real buzzkill.
The most important part to me is that Dark Souls 2 makes me feel like I'm playing a different game. I don't want something that will just carry all my strategies over from Dark Souls 1. I've mastered Dark Souls 1 in a lot of ways, or as much as I really want to. I don't really play the Souls games to feel like a badass. I play them to feel like I'm going to get mashed if I make a mistake, if I don't pay enough attention, etc.
I like the stuff that makes this game not a Demon's Souls game or Dark Souls: Rehashed Edition. Like, if I really want to play a game that behaves like Dark Souls 1, I can still go back to that and probably find something I haven't experienced or done. I also haven't beaten Demon's Souls (yet) and it's a similar flavour, but fundamentally different in some pretty important ways.
I feel like Dark Souls will always be the quintessential experience for me, but it was also my first taste of the franchise. There's a part of me that's frustrated I'm not falling in as hard with Dark Souls 2 as I did with the first, but I've literally played Dark Souls 1 for over a hundred and fifty hours. That's fifteen times the amount of time I've spent with Dark Souls 2. Of course I won't feel the same about it. Also, I don't feel like I *should* feel the same way about it. There's way too many safe bets in video games these days.