to the few people who i have seen on reddit and on here saying, "why should they make horns and faces separate just because you wanna look cute." heres a counter point against that.
keeping the faces and horns tied togeaver will shorten the amount of creative freedom people have with the race, and not just that, but visually most au ra will fall into the 'cookie cutter' category, When looking at another player the eye is drawn at different unique points about the model to see what race the player is, (Hight is not one of them unless your a male roe or lalafell.) Using miqote as an example to this point, most will look for the ears failing that they will look for the tail, for the au ra the most distinguishing features is the horns and the tail.
now this said, miqote can chose what tail they want out of nearly 8 choices, but now imagine if i told you the tails are locked to the faces you have to choose from so instead of 8 it is 4, and those 4 you cannot change at all, they are all the same, suddenly a lot of people will lose the feeling of uniqueness with there character, because of the higher chance of finding a clone of yourself, and this creates a detachment from the character. (which for rp is bad.)
so allowing the aura to freely chose there horns will open up the characters, even if it stays these 4 horn choices with no extra parts attached thats 16 possible combanations instead of 4, plus there 4 tails that moves up to 64 possible combinations. (not including tail length.)
Miqote currently have 4 faces with 8 tails meaning they have 52 possible combinations of faces with tails.
these numbers become much larger when the hair is taken into account, i think currently there is approximately 20 hairstyles in the game to choose from so that would make aprox 1280 au ra combinations with the choice of faces, horns, tails and hair.
and aprox 1040 miqote with tails, face and hair.
if the horns and the faces stayed locked the au ra would only have 320 different possible combinations, (counting the hair) that is a major gap in difference.
so please think of it this way would you rather see thousands of different looking au ra, or thousands of the same au ra running around?