Well... my two main dream snakes are:

Albino Pied
Lightning Pied (Axanthic Pied)

If I ever do a lightning pied project, I'm going to have to find the best possible example of axanthic that I can. I want what I produce to be absolutely stunning. Maybe I'll even try for a fire axanthic pied.

Some things I'd like to see produced, so maybe I'll do it if no one else does soon:

Banana Pied
Enchi Spider Pied, or Super Enchi Spider Pied... or Enchi Bumblebee Pied

Enchi makes the Pied busy, Spider makes an almost all white snake... I love the spider gene, but I don't like spieds since they are too white. I mostly want to work with pieds, so if enchi solves that problem maybe I'll get a stingerbee too