>>116752208>when Hussie was initially writing it, they were just born to be little psychos.I think that's just a product of the trolls, much like the kids, being written completely separate from their setting. You wouldn't believe John being the way he is has to do with Earth or any humans past Dad and Nanna, and the same is true for the trolls. So, to "bring the setting in", so to say, after you already established these characters to have little to nothing to do with their whereabouts, it doesn't quite work. Maybe it wouldn't have been an issue if Alternia had some worldbuilding, but frankly I don't think anyone that works with Homestuck knows how to do that.
That being said, I do agree with you in most of these regards, I picked Roxy for no reason other than that she's just "closer" to the Condesce (and like you said, in quite the nonsensical fashion), and anyone of the options would work, provided there's the narrative infrastructure. Hell, we could have Jane be the one to do the Condesce in if she got the right development.