For me i think they should be lithe and elegant with an range of faces to give a variety of looks. I actually think after they have added the Male Viera and Female Hrothgar, they should then start to look at the older races and improve the variety of options. Maybe separate the horns from the aura face, and add some more options.
I think given that the gear is the issue, adding a variety of faces should be relatively easy, as long as they do not change the dimensions of said heads.... that said i am not a programmer so have no idea how these things work. I assume there is a frame which has textures assigned. So changing said textures shouldn't be overly difficult...