One of my own theories/fantasies is that there is a showdown with Rumps, Hook, and Emma with Rumple holding Hook's heart and being generally evil and threatening, oh no, when suddenly Hook's love for Emma makes his heart get all super glowy and burns Rumple's hand or something. It sounds so so silly to me, but considering this show and the realm of possibility (almost anything) and my own CS shipper heart, I'd love for something like that to happen. Although really, the best actual resolution would be for Emma to kick Rumple's tuckus.