Most of the design and creation software I use all use the middle mouse button (clicking on the scroll wheel) to allow you to slide the canvas around (basically the Hand tool equivalent). Even Illustrator now supports this functionality. (This button press seems to be available because it appears as though clicking the scroll wheel in Photoshop does nothing.) I currently use the space bar to temporarily trigger the Hand Tool, but it's annoying going back and forth between Photoshop and essentially ANY video software that all use the space bar for Play.
Please add middle mouse button/scroll wheel click as a shortcut to temporarily enable the Hand Tool