Well, that is a little unfortunate. Was hoping to see killing blows return. I enjoyed the ones used against normal sized enemies in DAO because they were relatively quick and were well animated. The slow motion ones used against ogres/dragons were a bit more jarring. I can see why people got upset with those, though they didn't really bother me too much.
Regarding Leliana getting beheaded, I think when most people bring that up, they are doing so because they are pissed that their choice to kill her has basically been retconned. They aren't really complaining about the killing blow itself, rather they are trying to use it as an excuse as to why she shouldn't be able to come back to life. I would hope these people are smart enough to take a step back and realize that the killing blows were just a random game mechanic and that they have no bearing on whether Bioware decides to retcon a previous character's fate.
Anyway, from the footage I have seen so far, there seems to be an excessive amount of enemies shattering or burning to cinders. I don't even think there are generic death animations for the enemies. When they aren't being shattered or incinerated by magic, they seem to go straight into ragdoll mode. Not a fan of that, lol. Reminds me of Mass Effect, which had some of the worst ragdoll physics I have seen yet.
I mentioned this in another thread that got locked, but if they ever do bring back killing blows, they should definitely incorporate them into the combat mechanics. So they can make a generic killing blow buff, say a team wide stamina/mana regen. Kind of like inspiring your allies by defeating a foe in a spectacular fashion. Then you can also have certain class skill trees that involve finishing moves.
So an Assassin would have a skill where if they perform a killing blow, their next attack is an auto crit. A Reaver can have a skill where if they perform a finisher, enemies around them are feared for a few seconds. Champions can have a skill that gives a haste type effect to his or her teammates upon performing a killing blow.
But yeah, you get the point. Adding beneficial effects to killing blows would offset the fact that they take a small amount of control away from you during the animation. So upon seeing the killing blow, rather than getting upset that you can't immediately control your character for a few seconds, you would get excited because of the buffs that would be incorporated with them.
Either way, this is all a moot point for DAI. Kind of strange too, because the pic that used to be on the front page of that combat Q&A thread was of Blackwall running his sword through the chest of an enemy. This one: http://img4.wikia.no...andTogether.jpg