There was a mod to remove Cass scars but the creator took it down beacuse of the rage.
...what?
It's rather easy to point out that, engine-transition aside, the good woman didn't feature one such scar when we were first introduced to her in DA2, so one such a mod would make sense just for maintaining a sense of continuity. First step only as there aren't tools out yet to alter mesh- and face-appearances, but still.
Anyone remember the mod-author's name? May just shoot a message their way to not be intimidated by that kind of ridiculous behaviour and keep it up.
I never understand that mindset.
Like, I always thought many of the mods that changed Origins companion's faces were often silly. But you know what? Its a single player game, so if you want to mess with how a certain companion looks then by all means go for it! If you want to get rid of Cassandra's scars or Dorian's mustache, make Isabela white or give Solas a full head of hair, then why not? Its not ruining anyone else's game.
To add to that. which is already quite valid enough: in about every character's case in DA, the colour of their skin is really rather irrelevant, as far as in-game references to it are concerned.