Indeed, this elemental hero handbook should really give us some cold support for the classes that don't have any, especially for weapon wielding martial classes. Like the poor ranger doesn't have a single cold power, they should get some at-will utility that tacks on extra cold damage or something so we can make rangers from the frozen north. Maybe a theme for the fighter that gives him cold resistance and immobilizes with combat challenge attacks. And there should be a dragonborn warlord power that enshrouds everyone's weapons with icy death increasing crit ranges to 16-20 or something. There just isn't enough support for cold.