In my many years as an auto mechanic, working several different shops ranging from Allied Tire Service, Firestone, and Ford the only time we criss-crossed the tires was on front wheel drive vehicles. Even then we crossed the front tires to the rear and brought the rear tires straight to the front. Therefore, if your tires are wearing unevenly you have underlying problems that cannot be solved by simply rotating them. It would be like putting a bandaide on a broken bone, it might look good but it's still broke.
Ron, Tami, Annette, and Ron III
United States Coast Guard Active Duty
2011 Salem 28BHSS / 2004 Dodge 2500 Cummins