Alternate worlds, literature dept.

An interesting post about last week's Sherlock on legionseagle's journal (spoilers!) led to a discussion of what AUs would have resulted from the original Holmes short stories not existing, and this thought of marinarusalka's would be amazing. Anyone know any mystery writers accepting plotbunnies???

"Okay, now I'm imagining Christie coming up with the "English cozy" version of the urban fantasy mysteries that are popular today. Instead of a tattooed punk half-elf psychic detective with a vampire sidekick solving murders in a large US city, we get a nice half-elf spinster lady solving murders in a small English village. I'm kinda sorry that didn't happen."

(I'd love it if this had become a genre that split, as cozies have done, into fluffy end of police procedural (DI's best friend is the grumpy elf police surgeon, embittered by death of his human wife), semi-realistic but with quipping (Charlotte Macleod's Peter Shandy series if Profesor Svenson was an actual mountain troll!), extra cute with recipes (heroine's mom is always sending her lembas)... there are already psychic cat mysteries which would need hardly any retrofitting- The Kneazle Who Smelt A Rat, anyone?)