I felt bad killing Zathrian's clan, in the two games where I did that, and Witherfang, in the one playthrough where I did that. And I kinda feel bad whenever Abelas dies, even though I suspect that if he ever returns, there's at least a 50/50 chance he'll be an antagonist.
One kill that I don't feel bad about in and of itself, but which I wish had gone differently, was Branka in my first playthrough. Oghren landed the killing blow. I felt relieved when he finally took down the Ogre Alpha in Redcliffe Castle's courtyard, because until it died Branka was listed in his stats as the strongest being he'd killed.
@ Warden Nuggins
The main difference between Oghren's death/resurrection and Leiliana's is that we eventually get something of an explanation for Leiliana's. Oghren's just back up on his feet.
I'm not sure Cassandra, Leiliana, and Vivienne being potentially the Divine precludes them ever appearing again. It seems to me the devs might want to have that one World-State's Divine Victoria make an appearance sometime. That isn't likely to happen in the next game: Tevinter is one of the few places you really wouldn't expect to see the White Divine. But it could happen eventually.
Other than Solas?
Dorian is going to, and if he doesn't he should. But he will.
The Stenishok is going to reappear sometime. That's been made obvious. That it will be soon is less so. Given where we are and what's happening now, DA4 wouldn't be the worst possible time, but they might save him for later so that they can give him more focus.
And I'm going to feel pretty cheated if whoever got the Well of Sorrows doesn't reappear so that we can see what happens to them. They kind of left that plot dangling, and given what's supposed to happen next game there's likely no more natural time to clear that up. (Of course it's all but stated Inky's going to reappear in some capacity, so that's built in even if they drop the ball with the Well plotline the way some fans fear will happen.)
And... Solas is building an army of elves and trying to restore that which granted the elves immortality at the cost of humankind. I feel like Zathrian would be pretty easy to sell as part of that army, assuming of course that he's still alive. (Which is not a safe assumption: he lived to see the end of Origins in ONE of my nine playthroughs.) And if he's going to reappear at all, what better time and capacity than this?
As far as magic goes, it usually follows families. Usually. Dagna says in Origins that the Imperium used to have records on every human family that ever produced a mage child, Isolde (whose son is the go-to example of non-mages producing mages) is apparently supposed to have had a mage grandfather, and while Dorian says that a mage *can* occur in an otherwise mundane bloodline he says that it really only happens often enough to give the lower classes some hope that their kid will be able to move up into the middle class and pull them up too.
As for EzzyD noting that recessive genes don't explain how half-elves work in this setting, it's apparently not supposed to: I remember reading that the developers said it's magic, and that we might learn more about it later. (If we do, DA4 seems the logical time.) Something similar might be in play with how magic is inherited, if Dorian saying it *usually* follows in families is anything to go by.
The Codex entry for Red Lyrium hints that it was written by a Warden, and it gives me the impression that that Warden isn't entirely sure what they're dealing with. It says that "as near as we are able to determine, it is regular lyrium that has been somehow corrupted." If they were able to sense that it had the Blight, you wouldn't think they'd hedge their words that much.
I don't think we really know, though. As far as I know that's the strongest hint we have, and it's really not that strong.
Well, the Tevinters in the Denerim Alienage manage with the excuse that they are from a Circle, just one from another land. They manage this despite the fact that they're known to be Tevinter. And none of the elves in the Alienage seem to think this the least bit odd.
That seems to be evidence that the Tevinter Circles are respected at least far enough to exempt their students from being treated as apostates.
I don't know that Bhelen disbanding the Assembly and ruling alone unambiguously belongs in the Con column.
I'm not going to deny that one person having all the power is a scary situation, but given that the Assembly is prone to infighting and backstabbing, that they seem to want all the traditions that Bhelen's trying to chip away at, and that they're the ones who push either Bhelen or Harrowmont to declare the Dwarven Warden dead, I'm not sure Harrowmont letting them sit in on his decisions makes the situation any better. Harrowmont might have done better ruling alone. Bhelen probably does.