Yeah splitting the set now would upset their most important customers (the crazy folks who ran to the cash shop the second the new gear was up in order to buy it at full price). If they had announced it in advance and reacted to the outcry, it would have been more likely to happen.

I would support a resolution of making the clothes unisex and at the same time making the Minfilia or Y'shtola set (with hair) unisex. Then everyone gets something new and there's no reason to complain.