How would you fix/change/innovate mitsubishi's marketing & ads?

For sure, there should be several ways to do it. I was simply surprised to see all the new models and especially all the impressive and innovative technology Mitsubishi Motors Co. is using in their cars when I started to find which company really wants to "destroy" Toyota by facts. If you want to make people turning heads to the "x" Mitsubishi car, I would recommend you focus on people who strictly buys a car by cost-performance parameters.