Well, me neither. I have very few fandoms with definite pairings (which is a problem when having to nominate them in more than one fandom, btw). But this is just so much fun. Also, of course, it helps knowing the likely recipients. With a stranger, I wouldn't dare to, say, write a Fritz/Fredersdorf AU where FW steals Fredersdorf to be his Potsdam Giant/oboist and Fritz has to get him back one way or another, because FW could possibly be their DNW (even if he gets offed/defeated in the story). But with you or cahn, I'd feel safe in the assumption you'd go for such a scenario as well even though you didn't request it.