Like playing blackjack at a casino, redesigning a mid-size crossover SUV is a huge gamble for an automaker. Mess it up, and you lose big time. Get it right and you may clean out the house and dominate the competition. It’s Chevrolet’s turn to take the gamble with its redesigned 2018 Equinox. With a hot new Honda CR-V and Mazda CX-5...