Grading the Vincent Trocheck Trade: Rangers continue defensive reset while Mammoth load up top six

July 1 is Canada Day up north, but it’s an all-day news marathon for the rest of us. The opening day of free agency never fails to transform the NHL landscape. It’s also prime time for nascent contenders and retooling clubs alike to get their trade on after taking the pulse of who needs what around the league. The Utah Mammoth and New York Rangers fit those respective descriptions, and linked up for a trade that saw one of the longest-tenured targets, Vincent Trocheck, finally bid adieu to the Big Apple. The Rangers were unwilling to offload Trochek, long coveted…