DR Jennifer - RE: Frozen Chocolate - That's been around for a while. There are some candies - such as Charleston Chews (which is a chocolate coated nougat bar) - which are actually preferred "frozen". -They get a nice "crack" and "snap" when they're frozen, and then as you chew them, they morph as they warm up.
Yes, chocolate should ideally be eaten at room temperature, but there is something nice about the extra chill from time to time. And if you've ever had a Dove Bar, or any sort of chocolate-coated ice cream bar, you've already had a sort of frozen chocolate (bar). It shouldn't be that "shocking".