Heck, I can think of several combos right off hand that I wouldn't mind trying, but I really don't need more keepers this upcoming season:
Cross Silver Queen with
Candy Cane
Motley
Blood Red
Upper Keys
Axanthic 'A' Anerythristic
Milk Snake Motley
Striped
Scarlet (this is a form of Hypomelanism that showed up from the original ancestor of the Silver Queen line)
Hypo Okeetee
Sunkist
Heck, and I'm not even breathing hard thinking of possibilities! But thinking of the number of keepers I would need to hold back definitely gets the heart to palpitating. Any new project is a definite commitment on resources that needs to be considered.
I have one or two of the above in the works myself, but honestly, I am getting interesting enough results just from the Silver Queens themselves to keep me occupied. Some of them are noticeably lighter colored than others as adults. At least one is heading towards trying to lose all of it's pattern. Some have patternless or nearly patterless abdomens and/or heads.
Hmm, what about combining Charcoal Ghost with Silver Queen and working towards a combo of those genes?