There’s a lot good work there, but the composition and lighting make it hard for me to look at, so it fails the “create a cool image” test for me.
Everybody’s in this for their own reasons – if that’s what’s fun for you, great, but that’s not the rules. Using outside textures in an Open entry isn’t cheating, nor should it be IMHO, since using outside-of-Pure stuff is the whole point of Open entries. NASA maps are an excellent example of Open resources allowing entries that can’t be done inside of the Pure restrictions (unless you can do a procedural / hand-painted Pluto – Helge, still wanna see how you did that).
As for “pure” entries that seem obviously open, yeah, that’s frustrating, especially when voters go gaga for 'em, but the rules aren’t clear. I’d like “no outside textures in Pure entries”, but that’s not what the rules of our “just a fun little challenge” currently say.