Doug: DC Comics has long had a habit of changing the secret identities of their stable of heroes. From the very beginning of the Silver Age, when Barry Allen took the mantle of the Flash and followed shortly by Hal Jordan, Ray Palmer, et al., the DC heroes have often had differing personalities beneath the masks. Wally West, Kyle Rayner, Jason Todd and then Tim Drake... But Marvel doesn't often seem to do this. Sure, there have been some short-term changes, like James Rhodes, Eric Masterson, Ben Reilly, and now Bucky Barnes; and of course now all of their male characters good and bad have become women -- but I don't think any of those changes were ever perceived as being permanent.
What's your take on it? Which is more important -- the costume or the person wearing the costume?