Yes, they did add the fact that Bhelen is opposed to the caste system... but on the whole, he's made out to be such a really bad person that it's pretty clear cut that he shouldn't be ruling. He killed the prior king, killed his brother, tried to have his other brother killed-by-proxy. He works with and finances the criminals that are terrorizing the casteless, and even the lord who is in favor of abolishing the caste system and moving their society in a more progressive direction admits that Harrowmont, while in favor of the system, is a more forgiving individual and would be better suited to rule. Simply being opposed to one bad social tradition does not in any way add a shade of grey to the situation, especially given that Bhelen was also the one who consistently advocated for closing off surface access and only wanted to integrate casteless for financial reasons, and considering Bhelen's disregard for the rule of law (such as resorting to vioence when the law didn't choose him as king). Harrowmont may be socially conservative and he may eventually prove to be ineffectual (due to, again, the constant rebellion by Bhelen's people), but there's no real moral ambiguity here. Abolishing the caste system so the tyrant king can brutalize and control people of every castle in society is not a morally ambiguous or progressive development!
There also really isn't anything other than a stark black and white choice when it comes to the Urn of Sacred Ashes, or the Brecilian Forest scenario. I was surprised when the "Side with the Werewolves" choice turned out to be something as extreme as "oh, hey, let's just kill all the elves." Agreeing with the Lady of the Forest that Zathrian should be convinced, forcibly if necessary, to break the curse is an understandable moral choice. Killing the entire clan is not. There weren't really a lot of shade of grey elements once you got to Denerim for the Landsmeet, either, because the stuff Howe and Loghain were doing (torture, poisoning nobles, slavery) wasn't "well I guess this could be a defensible moral act in service to the saving of country," it was all completely morally indefensible stuff.
The only one that I thought was really really good was the choice of whether to use or save the Anvil. But that turned out to be a pointless decision since the ending makes it clear that the dwarves are going to fix and use the Anvil anyway.
