I am maybe a bit obsessive when it comes to selective breeding. I consider pattern complexity and depth of color, of course, but if we are to be responsible breeders of future generations of snakes, we MUST consider the whole snake. Is my choice a good selection for a breeding program? Is it the proper size and proportion? Does it eat well? Is this snake nervous and aggressive, or calm and comfortable with captive life? Are they related? This is my biggest concern for the snake breeding world. So many people seem to have no problem inbreeding snakes. With the exception of establishing a new line or genetic trait, inbreeding should be avoided at all costs because it causes SERIOUS problems! -Things like wobbles, kinks, duckbills, and sometimes stomach turning fatal birth defects.
I guess my point is, as long as you have two healthy unrelated snakes, breeding is just a matter of personal opinion. Take the clown morph for instance. Reduced pattern is quite popular right now. I, however, prefer crazy patterned clowns with brown backs. The more spots the better! But in spiders I like reduced pattern. Also in spiders, people seem to like high white sides. I don't. I like more gold. In pastels I look for -pastel- coloring, light browns and/or grays, and yellow. And I think pastels should not look like normals in pattern. I think pastels should have complex, wavy, crazy patterning and lots of flames.
Ok, shutting up now. (Told ya I was obsessive!)