That's all they can really do with Rumple, is to take everything away from him and send him off the deep end. Belle is "gone", but not dead - - so that can be fixed, and save him in the end. A dead Bae (as in, no coming back from) will be enough to drive him over that edge, though.
Hook in NY, in 2 weeks...where Emma is...
They're just so damn pretty...