Oh naturally it'd be strange to have the portraits of people you haven't met yet, but there being some way in the game to look up the characters you've already met would be nice I feel.
Viewing post in Elector portraits when they're not present.
I second this, though I have no suggestions on how to implement it. I have a nonexistent memory and having a list of characters with names faces and maybe even locations would be helpful, especially for repeat playthroughs. As is, I've taken screenshots of everyone's dossier and put them on my phone for quick reference.