I'm a big time history buff, and I wouldn't mind trying to get an RPG going that's based in history. I don't really have any fine details yet, just broad ideas. I do know if I try to do anything based in history, I would like it to take place in one of my favorite time periods. Those would be: Rome, anytime from the start of the Punic Wars up until the end of the Roman Republic, Briton after the collapse of the Roman Empire, the American Revolution, Napoleon's rise and fall, and then his second rise and fall, the Wild West, and WW2.
Now, with those I would like to keep with what history says, for the most part. There'd be room for dramatic interpretation, but as long as events play out like they should. As far as alt-history, I would be open to whatever. Hannibal manage to destroy Rome and alter civilization as we know it? Cool. Soviets won the Cold War? Awesome! Aliens landed at Waterloo and helped Napoleon out? Right the fuck on! I'm literally down for whatever most people would want to do when it comes to alt. history.
So, yeah, this interest check is more of a discussion and see who's interested in one of the ideas, who has some ideas of their own, and what they want to do.