These are some very nice ideas actually.
Nice ideas!
I've been told that a mountain/snowy map is planned, though I'm not 100% sure. And I don't believe its possible to have new animations aside from replacing the old ones, and I believe changing the name to Moonwalk is impossible, though I haven't looked through the files for a long time.
Standing Mane isn't new, it's been there a long time, its just kinda unpopular and is shoved in between the other options. New manes and such would be quite nice, but that also requires the source code.
I like the map ideas, though! I'm especially hoping a new parkour type map will be implemented. I like the idea of a world map as well, I used to know the old maps like the back of my hand but now I'm getting lost every 3 seconds xD
Cool ideas.
Like the way you think c;