Keeping this one simple. In light of finding out that this winter will not have present bags, I offer a very simple compromise to satisfy both sides.
Add an option to enable or disable the reskins of everything during various times of the year. Don’t like the reskinned event bosses in October? Turn it off. Enjoy the reskinned bags in December? Turn it on. This way there’s no complaints from people on either side, or at the very least the dissent is largely calmed down.