At the moment moving your canvas or rotating it is far from intuitive...
Yeah, one can hold the space bar and do stuff, but that just is not how we are used to work anymore...
When you think of it: Everywhere there is:
pinch to zoom in
spread to zoom out
twist to rotate
etc
Even Photoshop manages to use these gestures to manipulate its canvas (Including zoom and rotate) that way...
I would be over the moon if SketchBook would have a good working system like that, that does not need any key combinations, but just lets you use your fingers (If you have a touch device, obviously!)