I personally tend to roleplay as if i am the character rather than them being me it add's more dynamic choices i might not pick the options i would in real life etc
For me I prefer silhouette/faceless protagonists as i find it easier to connect with them. I find that games that do have a look for the protagonist in mind should stick to giving them a rather plain appearance (No, wacky hairstyles, massive tattoos and genital piercings). Its rare that i find a named protagonist with there own authentic style that i do like.
For me it doesn't matter if he has a face or not. I think I care more if he lets me write my name. That makes me feel like I'm really the main character.
There is no problem whether it has or does not have a face. The important thing for me at stake is that the mc is not ugly, fat and very old (I don't play those three that he has)
I hate the faceless MC with a passion. The only exception I'll make is for Harem Residence. It was one of the earliest games I started playing, so I didn't have much of a reference to compare it with. I just got into the game and story, so I keep playing it, when there's a new update. But it still freaks me out, every single time the MC is shown with just a blank face with no eyes or nose to speak of, just a mouth. Please, just give me a generic face or even keep it out of frame.
I actually don't have a preference. I dont mind either. What i don't like is when games have the profile of the character while they are talking. I prefer to see just the name and the texts