So I redid my small alicorn model last week! I had several orders for Luna, and decided it was high time to fix up the model to my current standards.
Unlike the last comparison, this one isn't as drastically different. Also, the old model of these two isn't as horrifyingly ugly to me. It just wasn't very show-accurate, and the joint placement made the rig extremely awkward to work with. The new one poses much more smoothly!
A quick list of the proportion changes are: the head shape is better, the mouth is better, the eyes are more properly shaped and further forward, the neck is longer, the chest is deeper, the shoulders are wider, the wings are lower, the pelvis is lower, the calves are longer, the ankles are more prominent, and the hooves are better shaped.