So, wait, if the unicorn race are now elves, are they bound to fantasy rules and characteristics. Things like slow aging, immortality(to an extent), or are they nearly similar to humans and have a normal life? Really curious now.
Normally I don't like the idea of "a little bit furry", but the pointy ears and wings are a great idea. I think this is because rather than creating horse/human hybrids, your turing the different types of ponies into similar humanoid races. Here's how i would do it...
To be honest; I've seen your new rendition of the various human "pony kinds" and I'm not feeling the whole long pointy ears thing. Granted, it's better than the slapped-on horns you see all over, but I find these ears to be very distracting from the overall character design. Zelda-style ears might've been more subtle while still maintaining the fantasy-vibe.
Also, cutie marks on the thighs (on humans) have always kind of weirded me out, but logical nonetheless when it comes to humanizing magical miniature horses. It's just personal preference to express them in what the characters wear.
Anyways, just thinking out loud here. Always nice to see the thought/design process of others.