Image imported from derpibooru 
Original Description:
 
My own G4(?) redesign for Wind Whistler.
 
Though I can’t stand the original G1 TV show, and never found the toys that interesting,  
MLP FiM and fanworks have made me fall in love with Spok pony. I thought long and hard  
about exactly what she might look like.  
Both her colors and hair and outfit need to speak of how reserved, precise and disciplined she is.  
For the colors I went with far more muted colors than usual, and darker than the original for better visibility. I realize it’s a bit of a stretch, but I think it works.  
For her outfit I went with the hair from the earth pony filly from the flashback in episode S7E26 with the complex braids. I also loved the headdress worn by the unicorn mare from the same scene who is seen talking to Starswirl. I also added a collar similar to Coco Pommel’s but with another jewel to tie it in to the headdress.
 
For what she might be in the MLP FiM world, I think she would be a linguist, someone who specializes in languages. I remember reading somewhere that she knew whistle language, and I love the idea she might specialize in non-spoken languages, possibly knowing some extra normal languages as well. She could be a teacher, researcher, translator, or even a codebreaker!
 
Imagine her working in the warlike olden Pegasus Tribe sending and breaking codes, giving morse codes to Firefly to deliver via lightning strikes.  
Or as an envoy to the crystal ponies, bonding with local crystal unicorn Fizzy.  
Or as an ambassador another race like the kirin.
 
Speaking of kirin, Wind whistler woud make a great kirin. She is Spok, and the Kirin are basically Vulcans.  
I think I’m going to draw a Kirin version of her soon.