I have a question concerning the outcome of Flashpoint #5.
Avoiding spoilers, for those who haven't read it: the time triggering event occurred roughly 20-25 years ago given the newer "younger" DCU heroes.
So how does that affect the WW2 history of the JSA, Frankenstein, and the Nazis getting South America? Wouldn't history remain the same UP TO the change point (sometime in the late 1980s or early 90s)? Obviously things and people like the Civil War, WW2, Washington, Lincoln, & others "took place". So how could time be altered both forward AND backward?