My hope is that the game includes temptation for actually altruistically motivated characters, such as
"Just think what *good* you could do with this power, to help everyone you care about"
or "this world needs order, a firm benevolent hand - it's clear that most mortal minds are vulnerable to decay and corruption - you however are the only one that can be expected with safeguarding Fâerun's people for all eternity, they'll get it all wrong without you, you *need* to rule"
etc. etc., you know, that whole "the way to hell is paved with good intentions" thing.
That's already a choice in the grove. Kagha wants you to kill the tieflings who are the innocent party. If you fail to convince her to let the kid go, you can lead a war against the druids and their injustice. Thus protecting the innocent but leaving them defensless if you leave without killing the goblins.