In this articleSBUXMobile order and Uber Eats and Doordash delivery pick up area at Starbucks coffee shop, Queens, New York. Lindsey Nicholson | UCG | Universal Images Group | Getty ImagesIt's become a familiar sight at Starbucks cafes: a counter crowded with mobile orders, frustrated customers waiting for the drinks they ordered and overwhelmed baristas trying to keep up with it all.Fixing that problem will likely top incoming CEO Brian Niccol's list of tasks to turn around the struggling coffee giant when ...