The better option is to just remove the gender flag from all items. It doesn't have any gameplay changing effects so there's no reason for it to exist at this point.
Well, the gender of the character does affect some gameplay, including NPC dialogue, character voice lines, and also I think only ark has a different skill animation on their 5th job skill depending on character gender.
It would be really nice to have an item that lets you change your characters gender, the main reason im suggesting this is because everytime I look at a cash shop update I kind of get jealous at the pretty things the other gender gets in terms of hair styles, faces and clothing.
Would love to hear other people's opinion on this.