The Magic had a different sort of impediment: namely huge chunks of ice in the north Atlantic that made safety (DCL didn't want its own Titanic, even if Disney would have synergized it to death!) an issue. So, after being the priciest eastbound Transatlantic cruise Disney has ever offered because of scheduled stops in Canada and, more importantly, Iceland, the Magic had to cancel calls on Halifax (I believe) and Iceland (completely). I've been told that the Magic was making an unscheduled stop in Norway (the first for the line) instead of Iceland.
This cruise was very coveted by DCL regulars due to the different itinerary, which also included a stop in NYC.
I had interest in taking this cruise until I looked at the pricing.