Before answering this question, take a moment to reflect on the values of Rocket Mortgage. They value innovation just as much as they appreciate customer service and employee morale. Consider the role for which you are interviewing. You could share a solution that showcases your analytical skills or talk about an idea that could help employees resolve customer complaints more efficiently. Consider addressing an issue that you think would be important to them. But try not to be presumptuous. You haven't yet learned how they do things or why they do them the way they do, so don't assume their systems need revamping. Remain humble.