I was also annoyed about the hookers! It felt very unnecessary. And also about di Luna apparently being into the hookers. His whole thing is that he's obsessively focused on Leonora, and it undercuts that if he's randomly hitting on other women.

I didn't notice the scar disappearing, but it seemed like the fake blood went off too soon. Like, he randomly had blood all over his hand during "Per me ora fatale," and it looked like he was wondering what to do about it.