It actually seems pretty well distributed to me. The top 6 creatures are all from different elements, and the top 15 have 11 elements represented. The extra 4 are 2 Gravity, 1 Dark and one Earth. I think that's kind of cool, too. You don't see a lot of Grav creature decks.
After looking at all the potential for fractal flying creatures (Fractal Leaf Dragons! Woo!) it just seemed like the card could go too much in that direction. I like that the brawlers and the little guys are all good -- gives them a niche.
Death could really get a lot out of this card too.