Humans
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No. Just- just no. Humans would be chunky soup to try and model and code, and would not fit the point of a 'Feral' part of the game. You can just use the Chimeria(SP) markings and manes, back mane to make up for the missing features of a human.
Dragons
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We have wings now, you can already make a dragon, just need an item pack and your good, if you just need horns.