The difference between Dragon Age: Inquisition and Dragon Age: Origins really, to me, is based on the fact the world seems much more full of "dungeons" than full of people to interact with. The best part of Inquisition was, for me, the Masked Ball because that was a primarily social engagement but it seemed much-much smaller than the vast territories like the Hinterlands and the various battlefields which inhabitants were scarce. It's hard to do human stories of horror, misery, sadness, and love if almost everyone you encounter is trying to kill you.
What's doubly sad is there's signs that this wasn't the way it was originally supposed to go. At one point in the development cycle, there was an advertisement about how you had a choice between saving a fortress full of your soldiers or the village of Crestwood. Cassandra would advise you to save the fortress because she's all about loyalty to her men and a Mother to them while Varric would want you to save the villagers. That's a simple but fairly direct and proper moral choice with no "right" answer. It's also one which ends in tragedy either way.
Perhaps Dragon Age 2 went a little too far in the direction of, "nothing you do matters" but I can't help think there's more of a balance to be struck here. I also feel like I did with The Witcher 2: Assassins of Kings that the "missing" segments of the game in the Templars vs. Mages would have been better available to both sides rather than an either or choice. If you're going to have Mages and Templars both survive the war then why not let everyone play the whole of the content? The game treats you as having chosen the Mages anyway since Red Templars are always your foes.
I can't help think the game also, essentially, skipped over the Mage-Templar War when that was one of the easiest sources of interesting drama in the franchise. "Rocks fall, everyone dies" seems like a fairly silly ending to it all. If anything wa dying for an actual sit down and negotiation or dictating of terms like Skyrim's Legion vs. Stormcloaks at the Graybeard's then this was it. I mean, hell, we had the Landsmeet--politics is nothing new in Dragon Age. So, again, it feels like moral ambiguity and actual "authenticity" of politics takes a beating.
And yes, the Briala and Celene make-up comes off as romantic in the game but sick if you know the backstory--which I'm not sure is true in Inquisition since there's no mention of, "Celene had Briala's entire family murdered to prove she's a ruthless psychopath to Gaspard's dead wife." It's also a much better and juicier secret to blackmail someone with than the somewhat tepid secrets you get anyway.
Oh well, David Gaider's absence from Dragon Age makes me think that this is the end of the "real" Dragon Age and the beginning of pastiches. Probably very well written pastiches but writing teams can and do never replicate the same sort of world as the original. Assassins Creed 1, for example, is different from the Ezio Trilogy, is different from the Kenway Trilogy and so on.