How many of us grew up on using game controllers? How many of us have an Xbox or a Playstation controller lying around? How many of us are comfortable navigating 3D space in a video game?
I bet the answer is most of us, a lot of us.
Please add game controller support to ArcGIS Pro 3D scenes. I believe that using a game controller instead of a standard mouse will make it easier to position a viewpoint in that environment. Let's be honest, it won't just make it easier for those that are comfortable with the game controller, it will also be fun. Google Earth has a flight simulator mode baked in--using a game controller in ArcGIS Pro would let us experience our data in a flight simulator-like way. Think about the Animate camera feature in Pro, using the game controller we wouldn't be limited to animating using keyframes--we could just fly through!