I think when people look at a washed out muddy looking 6+ gene animal and call it 'amazing' they are really not talking about that particular color pattern, what they find amazing is the potential when breeding. The parents may look muddy and washed out but the babies they can produce could be simply amazing with dozens of really cool morphs all coming out of the same muddy looking snake.
In reality it's not about the number of genes, it's about the right combination. There are some like pastel + fire + orange dream + yellowbelly that personally I can't really tell them apart very well, but when you mix all four you get the most amazing yellow snake you'll ever see!
I like to stick with genes that are very obvious even when mixed in with multiple other genes, like albino and pied. Enchi and Calico are pretty easy to spot, the same with pinstripe and spider.
I'm not sure I completely trust the ID of snakes with 5+ genes. Even if they were wrong it would take you 10+ years to prove them out LOL.