Also wanted to chime in and say I have RSI in my wrists and shoulders issues, particularly bad on my left side. WASD-ing can be a real strain on that sometimes. Because of that, this mod is a great help for when The Factory Must Grow but I'm hurting, even if the solution is a bit of a hack.
Speaking of being a hack factorio devs pls let modders get mouse position and clicks! Modders could do amazing things for accessibility with that info.