I brought this topic up about a year ago it I was wondering if we need to bring this back to life so the team knows that this is a HUGE thing in the 40k universe. As well as face customization for all the races not just a random ork that looks like everyone else around them it would seem stupid. One ork should have darker green skin than and and the the reverse of that. Chaos very minor mutations and body enchantments. Loyalist bald, bearded, scarred this list could go all day. Eldar male and female short, long hair again it could keep going, and going, and going.
I don't think removal of your helmet is confirmed yet. You may be able to remove them on Heroes, but not sure about normal classes.