I find that it's easy to miss out on a large part of the magnificent work of the authors/actors at Larian because many of the cinematics linked to locations or actions are not indicated.
For those who don't know (I've realised that it's not that rare), when entering a new zone, after solving a quest or when confronted with an element of the setting, there are frequently short cinematics (not essential to the script) that get lost because you have to talk to the characters to find them but there is no indication of their availability.
Discreet mark or optional mark would allow you to take full pleasure of this aspect of the game. Marking is all is important as these scenes often only concern one or 2 members of the group, but they add so much soul to the characters when you find them. Moreover it's frustrating when you've spoked 10 times to a character for nothing, and even more so when you realise later that you've missed a good cinematic.
With my love for your work,
Istria