With the new character models, there is so much detail in the expressions and nuances of the characters that I honestly don't know if I'll ever make a helm visible again. It's like playing a brand new game, and it's really weird, but really cool to see the updates in action. Screenshots and model viewers are all well and good, but you don't really get a sense of what these new models look like until you see them and play with them in game -- and after seeing them, the last thing I want to do is cover them up!
But I'm only one person, and my habits are just that, habits. I'm wondering, especially with the advent of transmog and being able to choose whatever helm you'd like to wear -- how many people turn off helms and cloaks these days? How familiar are you with how your character looks? Have you gotten a good look at your character's face lately, or are you more accustomed to seeing them covered up? And when the new models come out, are you going to change your character's transmog to suit them, or simply leave things as they are?