Exactly.. just like they did with Wolverine.
Instead of finding a 1,5m high, extremely hairy bum off the streets they went with a decent actor who's of normal height and build (and who made the character his own).
Blonde hair and blue eyes don't make the character of Sue.. it was just an artistic choice back then by the artist.
Yeah, I know, but this is the point I made in another thread - unlike Hugh Jackman, Jessica Alba wasn't chosen because she was right for the part. She was chosen because she's attractive and because she was sort of a hot property at the time (as in America's favourite babe of the moment, a title that Jessica Biel and Megan Fox seemed to inherit later on).
If you're going to cast someone who looks so different from their comic book counterpart, at least make the change justified by putting an ideal actor in the role. Michael Clarke Duncan is a different race than Kingpin of the comics and Ian Mckellan wasn't as physically imposing as Magneto has been drawn, but it didn't matter because they're good actors. What annoys me about Alba is she both doesn't look anything like Sue Storm and she's not a good enough actress to justify being cast in the role despite that.