I hadn't really thought about longevity as a part of the equation. Of course, I knew about the name changes for Sue and Jean (I didn't want to over-complicate my argument by poking holes in it) but hadn't seen any modern examples in a quite some time. However, today I learned that the Alpha Flight character Purple Girl was just renamed the Purple Woman in the new Alpha Flight series. Her character has been around for about 30 years, so I guess it's about time she becomes a woman!
@xerox-kitty: I would also agree with you that, on the whole, Marvel women tend to be stronger than DC women and more fleshed out as characters. I guess that's why I'm disappointed in this little set-back.