I think it would be neat if, amongst the many helmet models we could choose from, we had some that are very plainly fashioned from the skulls of various animals. Elk and deer skulls with big antlers, bull and goat skulls with big horns, horse skulls, bear skulls, wolf skulls, the works! With or without hoods or other decor!
I think it would be a great aesthetic flavour for barbarians, shamans, druids, animators, hunters, and people who want to dress up for the Forgotten Realms equivalent of Mari Lwyd.