Hmm.. To make a unique anime map...
Well that depends on the animes you know...
For example,
There are many anime maps about Bleach, Naruto, One Piece, Dragon Ball, etc. Which are really common...
So I suggest you follow dead-man-walking's suggestion....
You could make a map about "Katekyo Hitman Rebon!" or "Soul Eater"
Just make sure you incorporated better or even original systems....
And the terrain should be Unique as well
Your idea is... Um... aimed to high
Did you play "Anime Wars"?
It is a game about lots of animes so it's really, umm boring to me..
Base it off one anime or if you want two.. The Models would take a lot of space and without imported models, the game won't be exactly anime would it...
Also most anime based maps have a big problem..
The terrain.. Anime models just don't go with the normal Warcraft Terrain. So if you could get a person to make a custom tileset for you, it's good...
As I always say.. I don't think Hive is the best place for anime maps...