I think Spymon has answered your question, however reading further, if you people are interested, I could ask my friend to post here about the relation between the Legend/epic Gilgamesh and this anime.
I myself love the art aswell, but then I do have a very odd taste of art, I'm very happy to see this kind of art is still made into animation, it's not that I like the 'new' style that seems to be very popular these days, but I like to see various art and this sure caught my eye.
If there are any German words that need to be translated I most likely will pick out the errors, if there are any, even though I am not German, it's not quite that difficult for me since I'm Dutch.
Indeed the characters have lips, that in fact alone makes it an interesting anime.
I think Gilgamesh is not so popular because there is not much male bonding in it, there is not much of males that have the possibility of liking another male, which doesn't make it interesting for a lot of girls (since they like shonen-ai and perhaps Yaoi) and with Wolf's Rain there was the hinting towards that, maybe good to select a new anime that has that kind of hinting to attract more female fans, or am I seeing this all wrong?