You know, I much prefer DA's approach to dragon encounters than Skyrim's. Yes, the dragons in DA:Origins and DA:2 were bland in every way, but so were Skyrim's. Neither really did it better if you ask me, just different. 
As you stated, the dragons will look and behave more organic in DA:I. Each and every high dragon is going to be unique this time around each having their own breath attacks and appearances. There may be other differences as well, like resistances and such, but I don't know everything about the dragons in Inquisition and won't pretend to. This in itself is already such a huge improvement. I mean, have you seen them? They are awesome to look at! Dragons in Skyrim were just designed in a completely different way. There were differences between dragons, but this was based on the scaling of the dragons encountered. The dragons in Inquisition won't scale to the player. Their levels are fixed so that wouldn't have been possible. I think having their levels fixed will actually help to make the dragons feel like more of a threat, too. I certainly don't expect the awkwardness that is discovering you can pwn a dragon only to be clobbered by a giant! I also don't expect said giant to be able to send me flying to the moon. 
I'll admit, I like having the dragons stick to their own territories. It makes sense to me that they'd have nests in the world and that they'd be territorial to a deadly degree. I fail to see how this is any less "organic" than Skyrim's dragon encounters, especially when they could be roasting a kid, only for the brat to not give a single you know what. Dragons couldn't destroy any part of the environment in Skyrim either, which really distracted me at times. It was like, ok, that dragon totally roasted that building, yet nothing happened..........all righty.
The dragons in Skyrim really started to just annoy me after a while. I swear, it got to a point I couldn't hardly fast travel in peace. Every time I tried, there one was just waiting for me. Try to go elsewhere, the stalker drago 1.0 frickin followed me there!
There was nothing engaging about it, and it sure didn't take long for the initial excitement to wear off. They felt too common, like rats or fleas. I swear they were giant, scaly, flying trolls. 
As per what I'd like to see DA do with dragons in the future, I can only really think of two other things I'd like them to implement. First, please, let me attack the wings. It makes no sense to let me attack it's limbs and not the wings. I mean, you don't want it to be able to fly away now, do you? Speaking of which, second, have them try to flee when too badly injured. I noticed in the vids that while dragons may try to reposition themselves if injured, they don't really run away altogether. They still come back to finish the fight even if they do go into the air for a moment. I want it to literally attempt to escape my wrath! Flee in terror oh mighty beast! Cower at my awesome savagery and might! Experience true terror at my hands! Muhahaha!!!! 