Sword arts seem like a great new addition to the gameplay and I hope there are tons of different weapons with different sword arts. I'm kinda sad that the ability to parry with a weapon is lost, but I guess I'll just have to use those parrying shields now. And about parrying, I heard that it is similar to Dark Souls 1 as in instant parry frames, unlike Dark Souls 2 where there was a startup before the actual parry frames, that isn't really what I wanted but I guess I'll have to just deal with it.
As someone who has played Demon's Souls, mana bar is a familiar thing and I'm glad they're using it again. And yes, miracles use mana, that is shown in some gameplay. Miracles and sorceries are both magic, just different kinds of magic.
I guess you mean Sinh since you're talking about dragons? If so, I have to disagree with you. Sinh flies around too much. I like bosses like Darklurker and Sir Alonne more.
Then for one of the most important things of them all, PvP! DS1 PvP was pretty fun, but when DS2 was released I completely abandoned DS1 PvP and moved onto DS2. Everything was so much better. DeS didn't have enough players when I played it so I didn't get to PvP much and Bloodborne PvP was ruined with healing, stupidly powerful bloodgems, lowered health as invader and invasions pretty much always being against 2-3 players. I'm hoping that DS3 PvP will be something I can do for hundreds of hours like in DS2. What I've seen/read so far is that in the network test you could only invade people who were co-opping, but some people said that it might be stress test only thing, putting the servers to their limits. I hope so. Invaders also got half of their remaining estus with them, which I don't really like (even though I did invade a lot in both DS1 and DS2 and fought hosts who healed). Invader is the one who is prepared for PvP and has the element of surprise, the host has estus to balance it out. That worked well, I don't like invaders having estus. And as for invading, I've read that you start with the red eye orb so you can invade as much as you want even from the start, that will be awesome. Backstabs are combination of DS1 and DS2 so it's not instant lock into an animation but you will still damage your opponent if you don't catch him in a backstab. Feels like it will be at least almost as good as DS2 PvP, but I guess we have to wait so we can find out.
Kingdom Hearts is the only series I love more than the Souls series and I can't wait to get my hands on Dark Souls 3!