I am not sure if this on your list (and I currently don't dare to click through the pages because the forum is very unstable) but I noticed that if you recruit Minthara and have not previously used tadpoles, you will now get the option to convince your hesitant companions of using tadpole powers too. I assume this is because Minthara unlocks the Illithid Powers menu but from a narrative point of view it makes no sense. It would be nice if she tried to convince a hesitant player though.
Also, when long resting after having the scene in the throne room but before rescuing Minthi, Wyll said "Minthara's still imprisoned in Moonrise. If I were inclined, I could save her. Not that I'm inclined." The "I" makes me think this is an Origin-Wyll thing that slipped in, despite not being on his Origin (I am on Astarion's Origin atm).
