I always felt Emma was a more interesting love interest than Jean for Cyke (and Cyke himself was only really an interesting character beyond "the leader one" the period starting under Whedon's pen until they randomly decided He Was Evil Now). Jean never felt in anything I read or watched (note: that is hardly an exhaustive list though) as being much more than an extension of said "the leader one" double character and/or something for Wolverine to be miserable over. I mean, for frack's sake, for years she didn't even have a code-name!

Perhaps you can blame the 1990s cartoon X-Men especially (for 'tis where I started), but both of them I found very bland characters, and as I always said of X-3 if you were going to pick three X-Men to off, Jean, Cyke and Prof X would have been it...