Aye, some pretty cool idead you've got here!
I love the pelt length and dash and fly ideas...
but by far, the auras would be the coolest. True, there are bubble "aura" items, but they make you look like Glinda the Good from Wizard of Oz, so not the best for shadow demons.
second set of markings = instant love
You have some really good ideas!
I've wanted to be able to use two different types of markings for such a long time now and being able to put pictures in bios would be great. o3o
Choosing a pelt type would be awesome too.