Worst: I get someone wanting a certain (unnominated) villain ship or someone who wants parent/child incest. Those are my squicks and I'll be super bummed if I have to default.

Best: I get matched in the tiny fandom of my heart and they don't request the above. I can pretty much write them *anything* else and be happy for it. The want another villain ship, I can handle it. Sibling incest? Sure thing! Literally anything else will make this the best Yuletide in years.