Throughout the fight, Wilder was using his jab and a sweeping left hook that seemed to keep Ortiz at bay at times. Wilder's right is concussive. But is his left developing the same type of impact?
He needs to work on it more.
By mixing up speed/rhythm/feints/punch sequence on just a jab, left hook, and right hand he can can cause a lot of confusion. It will help him disguise when the big bomb is coming.
What left? Ortizz found his range time and time again. That's a 40 year old with short legs and he was finding range as easy as can be. He just stayed in range too long.