I've got my little collection, and I don't plan on getting much more. I have been thinking about adding in a recessive gene to play with and see what I can come up with further down the line. I've had a few ideas, but I want to know what your opinions are. This is what I have.

1.0 Ivory Queen Bee
1.0 Black Pewter
0.1 Bumblebee
0.1 Normal pos het Clown
0.1 Enchi

What would you add in there, and why?