There are an awful lot of alternate histories built around the American Civil War, but relatively few about the English Civil War. Just about everyone who reads in the field has seen endless stories in which Hitler is triumphant, but relatively few where Kaiser Wilhem II imposes his will upon a prostrate globe. What is it about some events that inspires people to ask "what if", and why is it lacking elsewhere? What historical hinges are there that would provide appropriate grist for the alternate history mill that haven't been much used yet?
Some alternate history writers, and some historians should make a decent panel.