For mog station items it is quite clear when you purchase them that they are gender locked - you make the decision to proceed with the purchase knowing that is the case. You are then told at the checkout that you waive your rights to a refund on them if you open the mail on the moogle.

So sorry but I am against this - characters make a decision to buy gender locked items and then decide to switch their genders - again their conscious decision. They need to take the responsibility for those decisions and be aware of the implications.