Before I get started, a note on spoilers: I went into information avoidance mode for DA:I back in August. So I've seen the teaser trailer, read the Game Informer article, and am aware of pretty much everything that was common knowledge up to that point. I very purposefully did not look at the Game Informer releases that came out after the article, and have managed to miss most of the major revelations since. So it's entirely possible that the things I talk about here have either been confirmed or denied by developers. I might guess correctly, or I might be completely off track. Either way, I don't want to know. So please, if you have been following pre-release information, or even if you've just heard a rumor here and there, don't tell me about it in comments.
This may seem like a hard line to take, but I know for a fact that too many spoilers will interfere with my ability to set expectations. I'm happy to speculate about the upcoming game in general, but I don't want to have too much pre-release information while I'm doing it. Thanks for your understanding.
Okay, now that the disclaimer is out of the way, on to my actual answer to the question! :)
1. I hope that the dwarf player character (because you know my first run through this game is going to be as a female dwarf if T is at all amenable) is fully rounded as a dwarf, not just plug-and-replace with a shorter human, with an interesting backstory that shows us more about dwarven society. I really missed the dwarves in DA2, so I'd love to see a lot more of them in general. I'd be especially interested to see Kal-Sharok. How is it different from Orzammar? How does their shared history connected them? What's their relationship to the surface? All kinds of interesting questions to answer there.
2. Also missing from DA2: Grey Wardens! And there are indications that we will see them back in DA:I. Whether as allies or antagonists -- I think there are fascinating possibilities with either of these directions. I'd like to see more of the Wardens as an organization: their history, the people involved. And a cameo by one of our well-loved past Wardens would not come amiss.... Honestly, I'm not too wedded to seeing favorite characters come back. I only want cameos and/or party members that serve the story while doing as little damage as possible to people's in-game canons. (And I'd actively prefer not to see the Warden or Hawke.) But a Warden from Vigil's Keep showing up? Nathaniel, or Sigrun, or Oghren? Yep, I'm on board.
3. A team of strong party members with their own histories, story arcs, and connections to the Inquisitor. This has been one of the strengths of the Dragon Age series so far, and I really hope to see it continue.
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