You think that's "a lot"?! You think that surpasses the number of changes that have lasted less than a year? I thought you'd get around twenty, but you got even less. And stop and think about those changes for a second. Most happen for characters nobody gives a damn about (Jason Todd), that were unused for years (Hector Hall... around a decade, I think), or that have their collections cancelled (Impulse and Superboy). What do these characters have in common? They don't make money. Superboy and Impulse did once, but obviously not anymore if they got their series cancelled. If they don't make money, writers can do whatever they want with them because chances are they won't become less profitable. The current costume and attitude change for Superboy: do you think that would have happened when he was the hottest DC character around? Would Hal Jordan have been turned into Parallax if his book had been selling a lot? Do you think Jason Todd would have been killed if hadn't been so unpopular? I'm not sure, but I think the Legion books weren't selling very when Zero Hour came around. Speaking of Superboy and Impulse: If I'm not mistaken the Superboy that joined the Legion isn't Kon-El, but a younger version of Kal-El (Hypertime, I'm guessing...). Let's see how much that lasts. And what's the big difference between Impulse and Kid Flash II, other than the costume change? Did Bart change his personality or something?
You'll find that the exceptions to what I'm saying are, surprise surprise, the same exceptions I've been talking about all along. Superman, Barry Allen... MAYBE Barbara Gordon.
