Question: How would one determine what type of feeding you want to use? Would it be based on situation (i.e.attacking/attacked=throat rip) or how long you've pressed the button? Or maybe a combination? Like Feed+Attack = Rough, while Feed + Talk = Smoother?
I like the idea of Wilhelm properly instructing Christof on the art of feeding, but it shouldn't be full blown mission. A prelude to a mission, perhaps, but not something to spend more than 5-10 minutes on.
Incidentally, the Cappadocian mission should include more options than "go in and KILL KILL KILL!". Christof and Wilhelm should have the option of talking their way through. Maybe if they opt for that path, the Cappadocians (or those who were still loyal to Garinol) would confront Mercurio themselves instead of it being Christof & Wilhelm.