Interesting idea but we'll be reworking the princes portrait in the near future so unfortunately it won't be applicable anymore then
Huh, I guess I'll wait for the new portrait system to drop then.
The generalized idea I had was simply more control over individual NPC portrait appearances, since right now it's an "all or nothing" system, where every NPC and the prince is changed with the portrait style, and what I wanted was an option to say, just have Morgana using the furry portrait set, while everyone else was unaffected. Like I said, no idea how do-able that is with TWINE.