The whole area of access to sketch, modify sketch, save sketch, import sketch and egress from sketchcould do with a good schlop of streamlining. You get a workout just from handling the mouse. I hope the powers that be take notice.
BTW Judging from your drawing, it looks like you're not adverse to working out with the mouse yourself. One alternative would be to add weights with cords that run off the edge of the table and get a real workout while you're at it. However, you would get better drawing results if you just used a pencil and a scanner.