Ease of use, and the ability for user / customer to get started out of the gates has a significant impact on whether or not the customer opens an application more than once.
Tableau Public, as well as many other applications like Indogo Studio etc.. have excellent tutorial videos built right into the opening splash screen. These tutorials are short (3-5mins), and help effectively orientate new user.
We should seriously consider embedding tutorial videos directly into both Lumira, and Lumira Studio.