I was one of the people who mentioned it so I feel I should expand on what I thought, (I wrote my comment quite late and bleary-eyed after playing far too many VN's so I hope it didn't come across as rude!)
The vision you have for your game is absolutely valid and honestly wasn't something I originally thought about, I think if you're passionate about giving that representation to people you should absolutely stick with it!
I personally think it would be a nice addition, but only *if* it's feasible to do so, and not something that should be added because you feel it "has" to be, especially when you have your own vision of the MC.
I'm not a developer so I have no idea how it works or anything, but would it be hard to implement something along the lines of choosing the canon antagonist / choosing a blank slate at the start, where choosing the "Blank Slate" simply doesn't add the CG's with Sabrina in?
Obviously that wouldn't work in CG's where Sabrina and other characters are in the same one, but for instance the one that's in the demo, if it only showed the Damon panel, but didn't cut to Sabrina? (If that's what you mean by first character POV I apologise for explaining it incorrectly)