I know this is a hot topic, and this might be a conflicting message with what's mostly being requested, but! I do believe this is logical:
So I'm a level 4 Devotion Paladin, and I'd been looking for a logical way to "Break the Oath" to gradually fall into darkness... So I decided to do it by promising Minthara to help her, and then turn against her; thereby, breaking my oath by being a liar/trickster? This, in my mind, would be a good way to begin to slowly drift to the dark side.
However, when I blew the horn at the druid grove gate, Minthara started commanding me to attack the good guys. That's when I told her that this is a trap, and that I'm actually against her.
To my disappointment, when I beat Minthara and her minions, my oath was not broken... But my armor says I took an Oath to be honest?
I get that this is a complex topic, and that what I did, morally, is considered "siding with the good." But if that's the case, then do I have to commit an obscene murder/betrayal to break my Oath?
To end this post with an actual suggestion, I would request a conversation plug that shows what options might break my paladin Oath. Maybe some sort of "Pop up" that comes up when I choose the Oath breaking action, or something along these lines.
Otherwise, maybe there should be 2 paladin options when it comes to major decisions: 1. [Oath of Devotion] comment, and 2. [Oathbreaker] comment?... Although that might be spoon feeding, but it would make sense, I think.
I love the lengths Larian are taking to blur the lines between good and evil; and to push this idea further, I believe there should be a morally grey action where a Paladin can break their oath - thereby justifying his drift to the dark side with his "newly found powers," or, in contrast, make him feel the need to go through this quest for redemption since he "didn't really mean to break his oath".
I would love to read everyone's opinion!